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1 | 9f107513 | Anthony Liguori | /*
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2 | 9f107513 | Anthony Liguori | * Virtio 9p backend
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3 | 9f107513 | Anthony Liguori | *
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4 | 9f107513 | Anthony Liguori | * Copyright IBM, Corp. 2010
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5 | 9f107513 | Anthony Liguori | *
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6 | 9f107513 | Anthony Liguori | * Authors:
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7 | 9f107513 | Anthony Liguori | * Anthony Liguori <aliguori@us.ibm.com>
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8 | 9f107513 | Anthony Liguori | *
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9 | 9f107513 | Anthony Liguori | * This work is licensed under the terms of the GNU GPL, version 2. See
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10 | 9f107513 | Anthony Liguori | * the COPYING file in the top-level directory.
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11 | 9f107513 | Anthony Liguori | *
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12 | 9f107513 | Anthony Liguori | */
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13 | 9f107513 | Anthony Liguori | |
14 | 9f107513 | Anthony Liguori | #include "virtio.h" |
15 | 9f107513 | Anthony Liguori | #include "pc.h" |
16 | 9f107513 | Anthony Liguori | #include "qemu_socket.h" |
17 | 9f107513 | Anthony Liguori | #include "virtio-9p.h" |
18 | 9f107513 | Anthony Liguori | #include "fsdev/qemu-fsdev.h" |
19 | 9f107513 | Anthony Liguori | #include "virtio-9p-debug.h" |
20 | fc22118d | Aneesh Kumar K.V | #include "virtio-9p-xattr.h" |
21 | 9f107513 | Anthony Liguori | |
22 | 9f107513 | Anthony Liguori | int debug_9p_pdu;
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23 | 9f107513 | Anthony Liguori | |
24 | fac4f111 | Venkateswararao Jujjuri (JV) | enum {
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25 | fac4f111 | Venkateswararao Jujjuri (JV) | Oread = 0x00,
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26 | fac4f111 | Venkateswararao Jujjuri (JV) | Owrite = 0x01,
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27 | fac4f111 | Venkateswararao Jujjuri (JV) | Ordwr = 0x02,
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28 | fac4f111 | Venkateswararao Jujjuri (JV) | Oexec = 0x03,
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29 | fac4f111 | Venkateswararao Jujjuri (JV) | Oexcl = 0x04,
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30 | fac4f111 | Venkateswararao Jujjuri (JV) | Otrunc = 0x10,
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31 | fac4f111 | Venkateswararao Jujjuri (JV) | Orexec = 0x20,
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32 | fac4f111 | Venkateswararao Jujjuri (JV) | Orclose = 0x40,
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33 | fac4f111 | Venkateswararao Jujjuri (JV) | Oappend = 0x80,
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34 | fac4f111 | Venkateswararao Jujjuri (JV) | }; |
35 | fac4f111 | Venkateswararao Jujjuri (JV) | |
36 | fac4f111 | Venkateswararao Jujjuri (JV) | static int omode_to_uflags(int8_t mode) |
37 | fac4f111 | Venkateswararao Jujjuri (JV) | { |
38 | fac4f111 | Venkateswararao Jujjuri (JV) | int ret = 0; |
39 | fac4f111 | Venkateswararao Jujjuri (JV) | |
40 | fac4f111 | Venkateswararao Jujjuri (JV) | switch (mode & 3) { |
41 | fac4f111 | Venkateswararao Jujjuri (JV) | case Oread:
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42 | fac4f111 | Venkateswararao Jujjuri (JV) | ret = O_RDONLY; |
43 | fac4f111 | Venkateswararao Jujjuri (JV) | break;
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44 | fac4f111 | Venkateswararao Jujjuri (JV) | case Ordwr:
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45 | fac4f111 | Venkateswararao Jujjuri (JV) | ret = O_RDWR; |
46 | fac4f111 | Venkateswararao Jujjuri (JV) | break;
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47 | fac4f111 | Venkateswararao Jujjuri (JV) | case Owrite:
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48 | fac4f111 | Venkateswararao Jujjuri (JV) | ret = O_WRONLY; |
49 | fac4f111 | Venkateswararao Jujjuri (JV) | break;
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50 | fac4f111 | Venkateswararao Jujjuri (JV) | case Oexec:
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51 | fac4f111 | Venkateswararao Jujjuri (JV) | ret = O_RDONLY; |
52 | fac4f111 | Venkateswararao Jujjuri (JV) | break;
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53 | fac4f111 | Venkateswararao Jujjuri (JV) | } |
54 | fac4f111 | Venkateswararao Jujjuri (JV) | |
55 | fac4f111 | Venkateswararao Jujjuri (JV) | if (mode & Otrunc) {
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56 | fac4f111 | Venkateswararao Jujjuri (JV) | ret |= O_TRUNC; |
57 | fac4f111 | Venkateswararao Jujjuri (JV) | } |
58 | fac4f111 | Venkateswararao Jujjuri (JV) | |
59 | fac4f111 | Venkateswararao Jujjuri (JV) | if (mode & Oappend) {
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60 | fac4f111 | Venkateswararao Jujjuri (JV) | ret |= O_APPEND; |
61 | fac4f111 | Venkateswararao Jujjuri (JV) | } |
62 | fac4f111 | Venkateswararao Jujjuri (JV) | |
63 | fac4f111 | Venkateswararao Jujjuri (JV) | if (mode & Oexcl) {
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64 | fac4f111 | Venkateswararao Jujjuri (JV) | ret |= O_EXCL; |
65 | fac4f111 | Venkateswararao Jujjuri (JV) | } |
66 | fac4f111 | Venkateswararao Jujjuri (JV) | |
67 | fac4f111 | Venkateswararao Jujjuri (JV) | return ret;
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68 | fac4f111 | Venkateswararao Jujjuri (JV) | } |
69 | fac4f111 | Venkateswararao Jujjuri (JV) | |
70 | 758e8e38 | Venkateswararao Jujjuri (JV) | void cred_init(FsCred *credp)
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71 | 131dcb25 | Anthony Liguori | { |
72 | 758e8e38 | Venkateswararao Jujjuri (JV) | credp->fc_uid = -1;
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73 | 758e8e38 | Venkateswararao Jujjuri (JV) | credp->fc_gid = -1;
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74 | 758e8e38 | Venkateswararao Jujjuri (JV) | credp->fc_mode = -1;
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75 | 758e8e38 | Venkateswararao Jujjuri (JV) | credp->fc_rdev = -1;
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76 | 131dcb25 | Anthony Liguori | } |
77 | 131dcb25 | Anthony Liguori | |
78 | 758e8e38 | Venkateswararao Jujjuri (JV) | static int v9fs_do_lstat(V9fsState *s, V9fsString *path, struct stat *stbuf) |
79 | 131dcb25 | Anthony Liguori | { |
80 | 758e8e38 | Venkateswararao Jujjuri (JV) | return s->ops->lstat(&s->ctx, path->data, stbuf);
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81 | 131dcb25 | Anthony Liguori | } |
82 | 131dcb25 | Anthony Liguori | |
83 | 131dcb25 | Anthony Liguori | static ssize_t v9fs_do_readlink(V9fsState *s, V9fsString *path, V9fsString *buf)
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84 | 131dcb25 | Anthony Liguori | { |
85 | 131dcb25 | Anthony Liguori | ssize_t len; |
86 | 131dcb25 | Anthony Liguori | |
87 | 131dcb25 | Anthony Liguori | buf->data = qemu_malloc(1024);
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88 | 131dcb25 | Anthony Liguori | |
89 | 131dcb25 | Anthony Liguori | len = s->ops->readlink(&s->ctx, path->data, buf->data, 1024 - 1); |
90 | 131dcb25 | Anthony Liguori | if (len > -1) { |
91 | 131dcb25 | Anthony Liguori | buf->size = len; |
92 | 131dcb25 | Anthony Liguori | buf->data[len] = 0;
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93 | 131dcb25 | Anthony Liguori | } |
94 | 131dcb25 | Anthony Liguori | |
95 | 131dcb25 | Anthony Liguori | return len;
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96 | 131dcb25 | Anthony Liguori | } |
97 | 131dcb25 | Anthony Liguori | |
98 | 131dcb25 | Anthony Liguori | static int v9fs_do_close(V9fsState *s, int fd) |
99 | 131dcb25 | Anthony Liguori | { |
100 | 131dcb25 | Anthony Liguori | return s->ops->close(&s->ctx, fd);
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101 | 131dcb25 | Anthony Liguori | } |
102 | 131dcb25 | Anthony Liguori | |
103 | 131dcb25 | Anthony Liguori | static int v9fs_do_closedir(V9fsState *s, DIR *dir) |
104 | 131dcb25 | Anthony Liguori | { |
105 | 131dcb25 | Anthony Liguori | return s->ops->closedir(&s->ctx, dir);
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106 | 131dcb25 | Anthony Liguori | } |
107 | 131dcb25 | Anthony Liguori | |
108 | a6568fe2 | Anthony Liguori | static int v9fs_do_open(V9fsState *s, V9fsString *path, int flags) |
109 | a6568fe2 | Anthony Liguori | { |
110 | a6568fe2 | Anthony Liguori | return s->ops->open(&s->ctx, path->data, flags);
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111 | a6568fe2 | Anthony Liguori | } |
112 | a6568fe2 | Anthony Liguori | |
113 | a6568fe2 | Anthony Liguori | static DIR *v9fs_do_opendir(V9fsState *s, V9fsString *path)
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114 | a6568fe2 | Anthony Liguori | { |
115 | a6568fe2 | Anthony Liguori | return s->ops->opendir(&s->ctx, path->data);
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116 | a6568fe2 | Anthony Liguori | } |
117 | a6568fe2 | Anthony Liguori | |
118 | a9231555 | Anthony Liguori | static void v9fs_do_rewinddir(V9fsState *s, DIR *dir) |
119 | a9231555 | Anthony Liguori | { |
120 | a9231555 | Anthony Liguori | return s->ops->rewinddir(&s->ctx, dir);
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121 | a9231555 | Anthony Liguori | } |
122 | a9231555 | Anthony Liguori | |
123 | a9231555 | Anthony Liguori | static off_t v9fs_do_telldir(V9fsState *s, DIR *dir)
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124 | a9231555 | Anthony Liguori | { |
125 | a9231555 | Anthony Liguori | return s->ops->telldir(&s->ctx, dir);
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126 | a9231555 | Anthony Liguori | } |
127 | a9231555 | Anthony Liguori | |
128 | a9231555 | Anthony Liguori | static struct dirent *v9fs_do_readdir(V9fsState *s, DIR *dir) |
129 | a9231555 | Anthony Liguori | { |
130 | a9231555 | Anthony Liguori | return s->ops->readdir(&s->ctx, dir);
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131 | a9231555 | Anthony Liguori | } |
132 | a9231555 | Anthony Liguori | |
133 | a9231555 | Anthony Liguori | static void v9fs_do_seekdir(V9fsState *s, DIR *dir, off_t off) |
134 | a9231555 | Anthony Liguori | { |
135 | a9231555 | Anthony Liguori | return s->ops->seekdir(&s->ctx, dir, off);
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136 | a9231555 | Anthony Liguori | } |
137 | a9231555 | Anthony Liguori | |
138 | 56d15a53 | Sanchit Garg | static int v9fs_do_preadv(V9fsState *s, int fd, const struct iovec *iov, |
139 | 56d15a53 | Sanchit Garg | int iovcnt, int64_t offset)
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140 | a9231555 | Anthony Liguori | { |
141 | 56d15a53 | Sanchit Garg | return s->ops->preadv(&s->ctx, fd, iov, iovcnt, offset);
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142 | a9231555 | Anthony Liguori | } |
143 | a9231555 | Anthony Liguori | |
144 | 56d15a53 | Sanchit Garg | static int v9fs_do_pwritev(V9fsState *s, int fd, const struct iovec *iov, |
145 | 56d15a53 | Sanchit Garg | int iovcnt, int64_t offset)
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146 | a9231555 | Anthony Liguori | { |
147 | 56d15a53 | Sanchit Garg | return s->ops->pwritev(&s->ctx, fd, iov, iovcnt, offset);
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148 | 8449360c | Anthony Liguori | } |
149 | 8449360c | Anthony Liguori | |
150 | c494dd6f | Anthony Liguori | static int v9fs_do_chmod(V9fsState *s, V9fsString *path, mode_t mode) |
151 | c494dd6f | Anthony Liguori | { |
152 | e95ead32 | Venkateswararao Jujjuri (JV) | FsCred cred; |
153 | e95ead32 | Venkateswararao Jujjuri (JV) | cred_init(&cred); |
154 | e95ead32 | Venkateswararao Jujjuri (JV) | cred.fc_mode = mode; |
155 | e95ead32 | Venkateswararao Jujjuri (JV) | return s->ops->chmod(&s->ctx, path->data, &cred);
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156 | c494dd6f | Anthony Liguori | } |
157 | c494dd6f | Anthony Liguori | |
158 | 5268cecc | M. Mohan Kumar | static int v9fs_do_mknod(V9fsState *s, char *name, |
159 | 5268cecc | M. Mohan Kumar | mode_t mode, dev_t dev, uid_t uid, gid_t gid) |
160 | c494dd6f | Anthony Liguori | { |
161 | 1c293312 | Venkateswararao Jujjuri (JV) | FsCred cred; |
162 | 1c293312 | Venkateswararao Jujjuri (JV) | cred_init(&cred); |
163 | 5268cecc | M. Mohan Kumar | cred.fc_uid = uid; |
164 | 5268cecc | M. Mohan Kumar | cred.fc_gid = gid; |
165 | 1c293312 | Venkateswararao Jujjuri (JV) | cred.fc_mode = mode; |
166 | 1c293312 | Venkateswararao Jujjuri (JV) | cred.fc_rdev = dev; |
167 | 5268cecc | M. Mohan Kumar | return s->ops->mknod(&s->ctx, name, &cred);
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168 | c494dd6f | Anthony Liguori | } |
169 | c494dd6f | Anthony Liguori | |
170 | b67592ea | M. Mohan Kumar | static int v9fs_do_mkdir(V9fsState *s, char *name, mode_t mode, |
171 | b67592ea | M. Mohan Kumar | uid_t uid, gid_t gid) |
172 | c494dd6f | Anthony Liguori | { |
173 | 00ec5c37 | Venkateswararao Jujjuri (JV) | FsCred cred; |
174 | 00ec5c37 | Venkateswararao Jujjuri (JV) | |
175 | 00ec5c37 | Venkateswararao Jujjuri (JV) | cred_init(&cred); |
176 | b67592ea | M. Mohan Kumar | cred.fc_uid = uid; |
177 | b67592ea | M. Mohan Kumar | cred.fc_gid = gid; |
178 | b67592ea | M. Mohan Kumar | cred.fc_mode = mode; |
179 | 00ec5c37 | Venkateswararao Jujjuri (JV) | |
180 | b67592ea | M. Mohan Kumar | return s->ops->mkdir(&s->ctx, name, &cred);
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181 | c494dd6f | Anthony Liguori | } |
182 | c494dd6f | Anthony Liguori | |
183 | c494dd6f | Anthony Liguori | static int v9fs_do_fstat(V9fsState *s, int fd, struct stat *stbuf) |
184 | c494dd6f | Anthony Liguori | { |
185 | c494dd6f | Anthony Liguori | return s->ops->fstat(&s->ctx, fd, stbuf);
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186 | c494dd6f | Anthony Liguori | } |
187 | c494dd6f | Anthony Liguori | |
188 | c1568af5 | Venkateswararao Jujjuri (JV) | static int v9fs_do_open2(V9fsState *s, char *fullname, uid_t uid, gid_t gid, |
189 | c1568af5 | Venkateswararao Jujjuri (JV) | int flags, int mode) |
190 | c494dd6f | Anthony Liguori | { |
191 | 4750a96f | Venkateswararao Jujjuri (JV) | FsCred cred; |
192 | 4750a96f | Venkateswararao Jujjuri (JV) | |
193 | 4750a96f | Venkateswararao Jujjuri (JV) | cred_init(&cred); |
194 | c1568af5 | Venkateswararao Jujjuri (JV) | cred.fc_uid = uid; |
195 | c1568af5 | Venkateswararao Jujjuri (JV) | cred.fc_gid = gid; |
196 | c1568af5 | Venkateswararao Jujjuri (JV) | cred.fc_mode = mode & 07777;
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197 | c1568af5 | Venkateswararao Jujjuri (JV) | flags = flags; |
198 | 4750a96f | Venkateswararao Jujjuri (JV) | |
199 | c1568af5 | Venkateswararao Jujjuri (JV) | return s->ops->open2(&s->ctx, fullname, flags, &cred);
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200 | c494dd6f | Anthony Liguori | } |
201 | c494dd6f | Anthony Liguori | |
202 | 08c60fc9 | Venkateswararao Jujjuri (JV) | static int v9fs_do_symlink(V9fsState *s, V9fsFidState *fidp, |
203 | 08c60fc9 | Venkateswararao Jujjuri (JV) | const char *oldpath, const char *newpath, gid_t gid) |
204 | c494dd6f | Anthony Liguori | { |
205 | 879c2813 | Venkateswararao Jujjuri (JV) | FsCred cred; |
206 | 879c2813 | Venkateswararao Jujjuri (JV) | cred_init(&cred); |
207 | 08c60fc9 | Venkateswararao Jujjuri (JV) | cred.fc_uid = fidp->uid; |
208 | 08c60fc9 | Venkateswararao Jujjuri (JV) | cred.fc_gid = gid; |
209 | 08c60fc9 | Venkateswararao Jujjuri (JV) | cred.fc_mode = 0777;
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210 | 879c2813 | Venkateswararao Jujjuri (JV) | |
211 | 08c60fc9 | Venkateswararao Jujjuri (JV) | return s->ops->symlink(&s->ctx, oldpath, newpath, &cred);
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212 | c494dd6f | Anthony Liguori | } |
213 | c494dd6f | Anthony Liguori | |
214 | c494dd6f | Anthony Liguori | static int v9fs_do_link(V9fsState *s, V9fsString *oldpath, V9fsString *newpath) |
215 | c494dd6f | Anthony Liguori | { |
216 | c494dd6f | Anthony Liguori | return s->ops->link(&s->ctx, oldpath->data, newpath->data);
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217 | c494dd6f | Anthony Liguori | } |
218 | c494dd6f | Anthony Liguori | |
219 | 8cf89e00 | Anthony Liguori | static int v9fs_do_truncate(V9fsState *s, V9fsString *path, off_t size) |
220 | 8cf89e00 | Anthony Liguori | { |
221 | 8cf89e00 | Anthony Liguori | return s->ops->truncate(&s->ctx, path->data, size);
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222 | 8cf89e00 | Anthony Liguori | } |
223 | 8cf89e00 | Anthony Liguori | |
224 | 8cf89e00 | Anthony Liguori | static int v9fs_do_rename(V9fsState *s, V9fsString *oldpath, |
225 | 8cf89e00 | Anthony Liguori | V9fsString *newpath) |
226 | 8cf89e00 | Anthony Liguori | { |
227 | 8cf89e00 | Anthony Liguori | return s->ops->rename(&s->ctx, oldpath->data, newpath->data);
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228 | 8cf89e00 | Anthony Liguori | } |
229 | 8cf89e00 | Anthony Liguori | |
230 | 8cf89e00 | Anthony Liguori | static int v9fs_do_chown(V9fsState *s, V9fsString *path, uid_t uid, gid_t gid) |
231 | 8cf89e00 | Anthony Liguori | { |
232 | f7613bee | Venkateswararao Jujjuri (JV) | FsCred cred; |
233 | f7613bee | Venkateswararao Jujjuri (JV) | cred_init(&cred); |
234 | f7613bee | Venkateswararao Jujjuri (JV) | cred.fc_uid = uid; |
235 | f7613bee | Venkateswararao Jujjuri (JV) | cred.fc_gid = gid; |
236 | f7613bee | Venkateswararao Jujjuri (JV) | |
237 | f7613bee | Venkateswararao Jujjuri (JV) | return s->ops->chown(&s->ctx, path->data, &cred);
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238 | 8cf89e00 | Anthony Liguori | } |
239 | 8cf89e00 | Anthony Liguori | |
240 | 8fc39ae4 | Sripathi Kodi | static int v9fs_do_utimensat(V9fsState *s, V9fsString *path, |
241 | 8fc39ae4 | Sripathi Kodi | const struct timespec times[2]) |
242 | 8cf89e00 | Anthony Liguori | { |
243 | 8fc39ae4 | Sripathi Kodi | return s->ops->utimensat(&s->ctx, path->data, times);
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244 | 8cf89e00 | Anthony Liguori | } |
245 | 8cf89e00 | Anthony Liguori | |
246 | 5bae1900 | Anthony Liguori | static int v9fs_do_remove(V9fsState *s, V9fsString *path) |
247 | 5bae1900 | Anthony Liguori | { |
248 | 5bae1900 | Anthony Liguori | return s->ops->remove(&s->ctx, path->data);
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249 | 5bae1900 | Anthony Liguori | } |
250 | 5bae1900 | Anthony Liguori | |
251 | 49594973 | Venkateswararao Jujjuri (JV) | static int v9fs_do_fsync(V9fsState *s, int fd, int datasync) |
252 | 8cf89e00 | Anthony Liguori | { |
253 | 49594973 | Venkateswararao Jujjuri (JV) | return s->ops->fsync(&s->ctx, fd, datasync);
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254 | 8cf89e00 | Anthony Liguori | } |
255 | 8cf89e00 | Anthony Liguori | |
256 | 5e94c103 | M. Mohan Kumar | static int v9fs_do_statfs(V9fsState *s, V9fsString *path, struct statfs *stbuf) |
257 | 5e94c103 | M. Mohan Kumar | { |
258 | 5e94c103 | M. Mohan Kumar | return s->ops->statfs(&s->ctx, path->data, stbuf);
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259 | 5e94c103 | M. Mohan Kumar | } |
260 | 5e94c103 | M. Mohan Kumar | |
261 | fa32ef88 | Aneesh Kumar K.V | static ssize_t v9fs_do_lgetxattr(V9fsState *s, V9fsString *path,
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262 | fa32ef88 | Aneesh Kumar K.V | V9fsString *xattr_name, |
263 | fa32ef88 | Aneesh Kumar K.V | void *value, size_t size)
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264 | fa32ef88 | Aneesh Kumar K.V | { |
265 | fa32ef88 | Aneesh Kumar K.V | return s->ops->lgetxattr(&s->ctx, path->data,
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266 | fa32ef88 | Aneesh Kumar K.V | xattr_name->data, value, size); |
267 | fa32ef88 | Aneesh Kumar K.V | } |
268 | fa32ef88 | Aneesh Kumar K.V | |
269 | fa32ef88 | Aneesh Kumar K.V | static ssize_t v9fs_do_llistxattr(V9fsState *s, V9fsString *path,
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270 | fa32ef88 | Aneesh Kumar K.V | void *value, size_t size)
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271 | fa32ef88 | Aneesh Kumar K.V | { |
272 | fa32ef88 | Aneesh Kumar K.V | return s->ops->llistxattr(&s->ctx, path->data,
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273 | fa32ef88 | Aneesh Kumar K.V | value, size); |
274 | fa32ef88 | Aneesh Kumar K.V | } |
275 | fa32ef88 | Aneesh Kumar K.V | |
276 | 10b468bd | Aneesh Kumar K.V | static int v9fs_do_lsetxattr(V9fsState *s, V9fsString *path, |
277 | 10b468bd | Aneesh Kumar K.V | V9fsString *xattr_name, |
278 | 10b468bd | Aneesh Kumar K.V | void *value, size_t size, int flags) |
279 | 10b468bd | Aneesh Kumar K.V | { |
280 | 10b468bd | Aneesh Kumar K.V | return s->ops->lsetxattr(&s->ctx, path->data,
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281 | 10b468bd | Aneesh Kumar K.V | xattr_name->data, value, size, flags); |
282 | 10b468bd | Aneesh Kumar K.V | } |
283 | 10b468bd | Aneesh Kumar K.V | |
284 | 9ed3ef26 | Aneesh Kumar K.V | static int v9fs_do_lremovexattr(V9fsState *s, V9fsString *path, |
285 | 9ed3ef26 | Aneesh Kumar K.V | V9fsString *xattr_name) |
286 | 9ed3ef26 | Aneesh Kumar K.V | { |
287 | 9ed3ef26 | Aneesh Kumar K.V | return s->ops->lremovexattr(&s->ctx, path->data,
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288 | 9ed3ef26 | Aneesh Kumar K.V | xattr_name->data); |
289 | 9ed3ef26 | Aneesh Kumar K.V | } |
290 | 9ed3ef26 | Aneesh Kumar K.V | |
291 | 9ed3ef26 | Aneesh Kumar K.V | |
292 | a03f7874 | Anthony Liguori | static void v9fs_string_init(V9fsString *str) |
293 | a03f7874 | Anthony Liguori | { |
294 | a03f7874 | Anthony Liguori | str->data = NULL;
|
295 | a03f7874 | Anthony Liguori | str->size = 0;
|
296 | a03f7874 | Anthony Liguori | } |
297 | a03f7874 | Anthony Liguori | |
298 | a03f7874 | Anthony Liguori | static void v9fs_string_free(V9fsString *str) |
299 | a03f7874 | Anthony Liguori | { |
300 | a03f7874 | Anthony Liguori | qemu_free(str->data); |
301 | a03f7874 | Anthony Liguori | str->data = NULL;
|
302 | a03f7874 | Anthony Liguori | str->size = 0;
|
303 | a03f7874 | Anthony Liguori | } |
304 | a03f7874 | Anthony Liguori | |
305 | a03f7874 | Anthony Liguori | static void v9fs_string_null(V9fsString *str) |
306 | a03f7874 | Anthony Liguori | { |
307 | a03f7874 | Anthony Liguori | v9fs_string_free(str); |
308 | a03f7874 | Anthony Liguori | } |
309 | a03f7874 | Anthony Liguori | |
310 | a03f7874 | Anthony Liguori | static int number_to_string(void *arg, char type) |
311 | a03f7874 | Anthony Liguori | { |
312 | a03f7874 | Anthony Liguori | unsigned int ret = 0; |
313 | a03f7874 | Anthony Liguori | |
314 | a03f7874 | Anthony Liguori | switch (type) {
|
315 | a03f7874 | Anthony Liguori | case 'u': { |
316 | a03f7874 | Anthony Liguori | unsigned int num = *(unsigned int *)arg; |
317 | a03f7874 | Anthony Liguori | |
318 | a03f7874 | Anthony Liguori | do {
|
319 | a03f7874 | Anthony Liguori | ret++; |
320 | a03f7874 | Anthony Liguori | num = num/10;
|
321 | a03f7874 | Anthony Liguori | } while (num);
|
322 | a03f7874 | Anthony Liguori | break;
|
323 | a03f7874 | Anthony Liguori | } |
324 | 45b23ff8 | Venkateswararao Jujjuri (JV) | case 'U': { |
325 | 45b23ff8 | Venkateswararao Jujjuri (JV) | unsigned long num = *(unsigned long *)arg; |
326 | 45b23ff8 | Venkateswararao Jujjuri (JV) | do {
|
327 | 45b23ff8 | Venkateswararao Jujjuri (JV) | ret++; |
328 | 45b23ff8 | Venkateswararao Jujjuri (JV) | num = num/10;
|
329 | 45b23ff8 | Venkateswararao Jujjuri (JV) | } while (num);
|
330 | 45b23ff8 | Venkateswararao Jujjuri (JV) | break;
|
331 | 45b23ff8 | Venkateswararao Jujjuri (JV) | } |
332 | a03f7874 | Anthony Liguori | default:
|
333 | a03f7874 | Anthony Liguori | printf("Number_to_string: Unknown number format\n");
|
334 | a03f7874 | Anthony Liguori | return -1; |
335 | a03f7874 | Anthony Liguori | } |
336 | a03f7874 | Anthony Liguori | |
337 | a03f7874 | Anthony Liguori | return ret;
|
338 | a03f7874 | Anthony Liguori | } |
339 | a03f7874 | Anthony Liguori | |
340 | c9ba47dc | Stefan Weil | static int GCC_FMT_ATTR(2, 0) |
341 | c9ba47dc | Stefan Weil | v9fs_string_alloc_printf(char **strp, const char *fmt, va_list ap) |
342 | a03f7874 | Anthony Liguori | { |
343 | a03f7874 | Anthony Liguori | va_list ap2; |
344 | a03f7874 | Anthony Liguori | char *iter = (char *)fmt; |
345 | a03f7874 | Anthony Liguori | int len = 0; |
346 | a03f7874 | Anthony Liguori | int nr_args = 0; |
347 | a03f7874 | Anthony Liguori | char *arg_char_ptr;
|
348 | a03f7874 | Anthony Liguori | unsigned int arg_uint; |
349 | 45b23ff8 | Venkateswararao Jujjuri (JV) | unsigned long arg_ulong; |
350 | a03f7874 | Anthony Liguori | |
351 | a03f7874 | Anthony Liguori | /* Find the number of %'s that denotes an argument */
|
352 | a03f7874 | Anthony Liguori | for (iter = strstr(iter, "%"); iter; iter = strstr(iter, "%")) { |
353 | a03f7874 | Anthony Liguori | nr_args++; |
354 | a03f7874 | Anthony Liguori | iter++; |
355 | a03f7874 | Anthony Liguori | } |
356 | a03f7874 | Anthony Liguori | |
357 | a03f7874 | Anthony Liguori | len = strlen(fmt) - 2*nr_args;
|
358 | a03f7874 | Anthony Liguori | |
359 | a03f7874 | Anthony Liguori | if (!nr_args) {
|
360 | a03f7874 | Anthony Liguori | goto alloc_print;
|
361 | a03f7874 | Anthony Liguori | } |
362 | a03f7874 | Anthony Liguori | |
363 | a03f7874 | Anthony Liguori | va_copy(ap2, ap); |
364 | a03f7874 | Anthony Liguori | |
365 | a03f7874 | Anthony Liguori | iter = (char *)fmt;
|
366 | a03f7874 | Anthony Liguori | |
367 | a03f7874 | Anthony Liguori | /* Now parse the format string */
|
368 | a03f7874 | Anthony Liguori | for (iter = strstr(iter, "%"); iter; iter = strstr(iter, "%")) { |
369 | a03f7874 | Anthony Liguori | iter++; |
370 | a03f7874 | Anthony Liguori | switch (*iter) {
|
371 | a03f7874 | Anthony Liguori | case 'u': |
372 | a03f7874 | Anthony Liguori | arg_uint = va_arg(ap2, unsigned int); |
373 | a03f7874 | Anthony Liguori | len += number_to_string((void *)&arg_uint, 'u'); |
374 | a03f7874 | Anthony Liguori | break;
|
375 | 45b23ff8 | Venkateswararao Jujjuri (JV) | case 'l': |
376 | 45b23ff8 | Venkateswararao Jujjuri (JV) | if (*++iter == 'u') { |
377 | 45b23ff8 | Venkateswararao Jujjuri (JV) | arg_ulong = va_arg(ap2, unsigned long); |
378 | 45b23ff8 | Venkateswararao Jujjuri (JV) | len += number_to_string((void *)&arg_ulong, 'U'); |
379 | 45b23ff8 | Venkateswararao Jujjuri (JV) | } else {
|
380 | 45b23ff8 | Venkateswararao Jujjuri (JV) | return -1; |
381 | 45b23ff8 | Venkateswararao Jujjuri (JV) | } |
382 | 45b23ff8 | Venkateswararao Jujjuri (JV) | break;
|
383 | a03f7874 | Anthony Liguori | case 's': |
384 | a03f7874 | Anthony Liguori | arg_char_ptr = va_arg(ap2, char *);
|
385 | a03f7874 | Anthony Liguori | len += strlen(arg_char_ptr); |
386 | a03f7874 | Anthony Liguori | break;
|
387 | a03f7874 | Anthony Liguori | case 'c': |
388 | a03f7874 | Anthony Liguori | len += 1;
|
389 | a03f7874 | Anthony Liguori | break;
|
390 | a03f7874 | Anthony Liguori | default:
|
391 | a03f7874 | Anthony Liguori | fprintf(stderr, |
392 | a03f7874 | Anthony Liguori | "v9fs_string_alloc_printf:Incorrect format %c", *iter);
|
393 | a03f7874 | Anthony Liguori | return -1; |
394 | a03f7874 | Anthony Liguori | } |
395 | a03f7874 | Anthony Liguori | iter++; |
396 | a03f7874 | Anthony Liguori | } |
397 | a03f7874 | Anthony Liguori | |
398 | a03f7874 | Anthony Liguori | alloc_print:
|
399 | a03f7874 | Anthony Liguori | *strp = qemu_malloc((len + 1) * sizeof(**strp)); |
400 | a03f7874 | Anthony Liguori | |
401 | a03f7874 | Anthony Liguori | return vsprintf(*strp, fmt, ap);
|
402 | a03f7874 | Anthony Liguori | } |
403 | a03f7874 | Anthony Liguori | |
404 | c9ba47dc | Stefan Weil | static void GCC_FMT_ATTR(2, 3) |
405 | c9ba47dc | Stefan Weil | v9fs_string_sprintf(V9fsString *str, const char *fmt, ...) |
406 | a03f7874 | Anthony Liguori | { |
407 | a03f7874 | Anthony Liguori | va_list ap; |
408 | a03f7874 | Anthony Liguori | int err;
|
409 | a03f7874 | Anthony Liguori | |
410 | a03f7874 | Anthony Liguori | v9fs_string_free(str); |
411 | a03f7874 | Anthony Liguori | |
412 | a03f7874 | Anthony Liguori | va_start(ap, fmt); |
413 | a03f7874 | Anthony Liguori | err = v9fs_string_alloc_printf(&str->data, fmt, ap); |
414 | a03f7874 | Anthony Liguori | BUG_ON(err == -1);
|
415 | a03f7874 | Anthony Liguori | va_end(ap); |
416 | a03f7874 | Anthony Liguori | |
417 | a03f7874 | Anthony Liguori | str->size = err; |
418 | a03f7874 | Anthony Liguori | } |
419 | a03f7874 | Anthony Liguori | |
420 | a03f7874 | Anthony Liguori | static void v9fs_string_copy(V9fsString *lhs, V9fsString *rhs) |
421 | a03f7874 | Anthony Liguori | { |
422 | a03f7874 | Anthony Liguori | v9fs_string_free(lhs); |
423 | a03f7874 | Anthony Liguori | v9fs_string_sprintf(lhs, "%s", rhs->data);
|
424 | a03f7874 | Anthony Liguori | } |
425 | a03f7874 | Anthony Liguori | |
426 | a03f7874 | Anthony Liguori | static size_t v9fs_string_size(V9fsString *str)
|
427 | a03f7874 | Anthony Liguori | { |
428 | a03f7874 | Anthony Liguori | return str->size;
|
429 | a03f7874 | Anthony Liguori | } |
430 | a03f7874 | Anthony Liguori | |
431 | 286d5652 | Anthony Liguori | static V9fsFidState *lookup_fid(V9fsState *s, int32_t fid)
|
432 | 286d5652 | Anthony Liguori | { |
433 | 286d5652 | Anthony Liguori | V9fsFidState *f; |
434 | 286d5652 | Anthony Liguori | |
435 | 286d5652 | Anthony Liguori | for (f = s->fid_list; f; f = f->next) {
|
436 | 286d5652 | Anthony Liguori | if (f->fid == fid) {
|
437 | 286d5652 | Anthony Liguori | return f;
|
438 | 286d5652 | Anthony Liguori | } |
439 | 286d5652 | Anthony Liguori | } |
440 | 286d5652 | Anthony Liguori | |
441 | 286d5652 | Anthony Liguori | return NULL; |
442 | 286d5652 | Anthony Liguori | } |
443 | 286d5652 | Anthony Liguori | |
444 | 286d5652 | Anthony Liguori | static V9fsFidState *alloc_fid(V9fsState *s, int32_t fid)
|
445 | 286d5652 | Anthony Liguori | { |
446 | 286d5652 | Anthony Liguori | V9fsFidState *f; |
447 | 286d5652 | Anthony Liguori | |
448 | 286d5652 | Anthony Liguori | f = lookup_fid(s, fid); |
449 | 286d5652 | Anthony Liguori | if (f) {
|
450 | 286d5652 | Anthony Liguori | return NULL; |
451 | 286d5652 | Anthony Liguori | } |
452 | 286d5652 | Anthony Liguori | |
453 | 286d5652 | Anthony Liguori | f = qemu_mallocz(sizeof(V9fsFidState));
|
454 | 286d5652 | Anthony Liguori | |
455 | 286d5652 | Anthony Liguori | f->fid = fid; |
456 | d62dbb51 | Aneesh Kumar K.V | f->fid_type = P9_FID_NONE; |
457 | 286d5652 | Anthony Liguori | |
458 | 286d5652 | Anthony Liguori | f->next = s->fid_list; |
459 | 286d5652 | Anthony Liguori | s->fid_list = f; |
460 | 286d5652 | Anthony Liguori | |
461 | 286d5652 | Anthony Liguori | return f;
|
462 | 286d5652 | Anthony Liguori | } |
463 | 286d5652 | Anthony Liguori | |
464 | 10b468bd | Aneesh Kumar K.V | static int v9fs_xattr_fid_clunk(V9fsState *s, V9fsFidState *fidp) |
465 | 10b468bd | Aneesh Kumar K.V | { |
466 | 10b468bd | Aneesh Kumar K.V | int retval = 0; |
467 | 10b468bd | Aneesh Kumar K.V | |
468 | 10b468bd | Aneesh Kumar K.V | if (fidp->fs.xattr.copied_len == -1) { |
469 | 10b468bd | Aneesh Kumar K.V | /* getxattr/listxattr fid */
|
470 | 10b468bd | Aneesh Kumar K.V | goto free_value;
|
471 | 10b468bd | Aneesh Kumar K.V | } |
472 | 10b468bd | Aneesh Kumar K.V | /*
|
473 | 10b468bd | Aneesh Kumar K.V | * if this is fid for setxattr. clunk should
|
474 | 10b468bd | Aneesh Kumar K.V | * result in setxattr localcall
|
475 | 10b468bd | Aneesh Kumar K.V | */
|
476 | 10b468bd | Aneesh Kumar K.V | if (fidp->fs.xattr.len != fidp->fs.xattr.copied_len) {
|
477 | 10b468bd | Aneesh Kumar K.V | /* clunk after partial write */
|
478 | 10b468bd | Aneesh Kumar K.V | retval = -EINVAL; |
479 | 10b468bd | Aneesh Kumar K.V | goto free_out;
|
480 | 10b468bd | Aneesh Kumar K.V | } |
481 | 9ed3ef26 | Aneesh Kumar K.V | if (fidp->fs.xattr.len) {
|
482 | 9ed3ef26 | Aneesh Kumar K.V | retval = v9fs_do_lsetxattr(s, &fidp->path, &fidp->fs.xattr.name, |
483 | 9ed3ef26 | Aneesh Kumar K.V | fidp->fs.xattr.value, |
484 | 9ed3ef26 | Aneesh Kumar K.V | fidp->fs.xattr.len, |
485 | 9ed3ef26 | Aneesh Kumar K.V | fidp->fs.xattr.flags); |
486 | 9ed3ef26 | Aneesh Kumar K.V | } else {
|
487 | 9ed3ef26 | Aneesh Kumar K.V | retval = v9fs_do_lremovexattr(s, &fidp->path, &fidp->fs.xattr.name); |
488 | 9ed3ef26 | Aneesh Kumar K.V | } |
489 | 10b468bd | Aneesh Kumar K.V | free_out:
|
490 | 10b468bd | Aneesh Kumar K.V | v9fs_string_free(&fidp->fs.xattr.name); |
491 | 10b468bd | Aneesh Kumar K.V | free_value:
|
492 | 10b468bd | Aneesh Kumar K.V | if (fidp->fs.xattr.value) {
|
493 | 10b468bd | Aneesh Kumar K.V | qemu_free(fidp->fs.xattr.value); |
494 | 10b468bd | Aneesh Kumar K.V | } |
495 | 10b468bd | Aneesh Kumar K.V | return retval;
|
496 | 10b468bd | Aneesh Kumar K.V | } |
497 | 10b468bd | Aneesh Kumar K.V | |
498 | 286d5652 | Anthony Liguori | static int free_fid(V9fsState *s, int32_t fid) |
499 | 286d5652 | Anthony Liguori | { |
500 | 10b468bd | Aneesh Kumar K.V | int retval = 0; |
501 | 286d5652 | Anthony Liguori | V9fsFidState **fidpp, *fidp; |
502 | 286d5652 | Anthony Liguori | |
503 | 286d5652 | Anthony Liguori | for (fidpp = &s->fid_list; *fidpp; fidpp = &(*fidpp)->next) {
|
504 | 286d5652 | Anthony Liguori | if ((*fidpp)->fid == fid) {
|
505 | 286d5652 | Anthony Liguori | break;
|
506 | 286d5652 | Anthony Liguori | } |
507 | 286d5652 | Anthony Liguori | } |
508 | 286d5652 | Anthony Liguori | |
509 | 286d5652 | Anthony Liguori | if (*fidpp == NULL) { |
510 | 286d5652 | Anthony Liguori | return -ENOENT;
|
511 | 286d5652 | Anthony Liguori | } |
512 | 286d5652 | Anthony Liguori | |
513 | 286d5652 | Anthony Liguori | fidp = *fidpp; |
514 | 286d5652 | Anthony Liguori | *fidpp = fidp->next; |
515 | 286d5652 | Anthony Liguori | |
516 | d62dbb51 | Aneesh Kumar K.V | if (fidp->fid_type == P9_FID_FILE) {
|
517 | d62dbb51 | Aneesh Kumar K.V | v9fs_do_close(s, fidp->fs.fd); |
518 | d62dbb51 | Aneesh Kumar K.V | } else if (fidp->fid_type == P9_FID_DIR) { |
519 | d62dbb51 | Aneesh Kumar K.V | v9fs_do_closedir(s, fidp->fs.dir); |
520 | d62dbb51 | Aneesh Kumar K.V | } else if (fidp->fid_type == P9_FID_XATTR) { |
521 | 10b468bd | Aneesh Kumar K.V | retval = v9fs_xattr_fid_clunk(s, fidp); |
522 | 286d5652 | Anthony Liguori | } |
523 | 286d5652 | Anthony Liguori | v9fs_string_free(&fidp->path); |
524 | 286d5652 | Anthony Liguori | qemu_free(fidp); |
525 | 286d5652 | Anthony Liguori | |
526 | 10b468bd | Aneesh Kumar K.V | return retval;
|
527 | 286d5652 | Anthony Liguori | } |
528 | 286d5652 | Anthony Liguori | |
529 | 286d5652 | Anthony Liguori | #define P9_QID_TYPE_DIR 0x80 |
530 | 286d5652 | Anthony Liguori | #define P9_QID_TYPE_SYMLINK 0x02 |
531 | 286d5652 | Anthony Liguori | |
532 | 286d5652 | Anthony Liguori | #define P9_STAT_MODE_DIR 0x80000000 |
533 | 286d5652 | Anthony Liguori | #define P9_STAT_MODE_APPEND 0x40000000 |
534 | 286d5652 | Anthony Liguori | #define P9_STAT_MODE_EXCL 0x20000000 |
535 | 286d5652 | Anthony Liguori | #define P9_STAT_MODE_MOUNT 0x10000000 |
536 | 286d5652 | Anthony Liguori | #define P9_STAT_MODE_AUTH 0x08000000 |
537 | 286d5652 | Anthony Liguori | #define P9_STAT_MODE_TMP 0x04000000 |
538 | 286d5652 | Anthony Liguori | #define P9_STAT_MODE_SYMLINK 0x02000000 |
539 | 286d5652 | Anthony Liguori | #define P9_STAT_MODE_LINK 0x01000000 |
540 | 286d5652 | Anthony Liguori | #define P9_STAT_MODE_DEVICE 0x00800000 |
541 | 286d5652 | Anthony Liguori | #define P9_STAT_MODE_NAMED_PIPE 0x00200000 |
542 | 286d5652 | Anthony Liguori | #define P9_STAT_MODE_SOCKET 0x00100000 |
543 | 286d5652 | Anthony Liguori | #define P9_STAT_MODE_SETUID 0x00080000 |
544 | 286d5652 | Anthony Liguori | #define P9_STAT_MODE_SETGID 0x00040000 |
545 | 286d5652 | Anthony Liguori | #define P9_STAT_MODE_SETVTX 0x00010000 |
546 | 286d5652 | Anthony Liguori | |
547 | 286d5652 | Anthony Liguori | #define P9_STAT_MODE_TYPE_BITS (P9_STAT_MODE_DIR | \
|
548 | 286d5652 | Anthony Liguori | P9_STAT_MODE_SYMLINK | \ |
549 | 286d5652 | Anthony Liguori | P9_STAT_MODE_LINK | \ |
550 | 286d5652 | Anthony Liguori | P9_STAT_MODE_DEVICE | \ |
551 | 286d5652 | Anthony Liguori | P9_STAT_MODE_NAMED_PIPE | \ |
552 | 286d5652 | Anthony Liguori | P9_STAT_MODE_SOCKET) |
553 | 286d5652 | Anthony Liguori | |
554 | 286d5652 | Anthony Liguori | /* This is the algorithm from ufs in spfs */
|
555 | 286d5652 | Anthony Liguori | static void stat_to_qid(const struct stat *stbuf, V9fsQID *qidp) |
556 | 286d5652 | Anthony Liguori | { |
557 | 286d5652 | Anthony Liguori | size_t size; |
558 | 286d5652 | Anthony Liguori | |
559 | 286d5652 | Anthony Liguori | size = MIN(sizeof(stbuf->st_ino), sizeof(qidp->path)); |
560 | 286d5652 | Anthony Liguori | memcpy(&qidp->path, &stbuf->st_ino, size); |
561 | 286d5652 | Anthony Liguori | qidp->version = stbuf->st_mtime ^ (stbuf->st_size << 8);
|
562 | 286d5652 | Anthony Liguori | qidp->type = 0;
|
563 | 286d5652 | Anthony Liguori | if (S_ISDIR(stbuf->st_mode)) {
|
564 | 286d5652 | Anthony Liguori | qidp->type |= P9_QID_TYPE_DIR; |
565 | 286d5652 | Anthony Liguori | } |
566 | 286d5652 | Anthony Liguori | if (S_ISLNK(stbuf->st_mode)) {
|
567 | 286d5652 | Anthony Liguori | qidp->type |= P9_QID_TYPE_SYMLINK; |
568 | 286d5652 | Anthony Liguori | } |
569 | 286d5652 | Anthony Liguori | } |
570 | 286d5652 | Anthony Liguori | |
571 | 286d5652 | Anthony Liguori | static int fid_to_qid(V9fsState *s, V9fsFidState *fidp, V9fsQID *qidp) |
572 | 286d5652 | Anthony Liguori | { |
573 | 286d5652 | Anthony Liguori | struct stat stbuf;
|
574 | 286d5652 | Anthony Liguori | int err;
|
575 | 286d5652 | Anthony Liguori | |
576 | 286d5652 | Anthony Liguori | err = v9fs_do_lstat(s, &fidp->path, &stbuf); |
577 | 286d5652 | Anthony Liguori | if (err) {
|
578 | 286d5652 | Anthony Liguori | return err;
|
579 | 286d5652 | Anthony Liguori | } |
580 | 286d5652 | Anthony Liguori | |
581 | 286d5652 | Anthony Liguori | stat_to_qid(&stbuf, qidp); |
582 | 286d5652 | Anthony Liguori | return 0; |
583 | 286d5652 | Anthony Liguori | } |
584 | 286d5652 | Anthony Liguori | |
585 | 9f107513 | Anthony Liguori | static V9fsPDU *alloc_pdu(V9fsState *s)
|
586 | 9f107513 | Anthony Liguori | { |
587 | 9f107513 | Anthony Liguori | V9fsPDU *pdu = NULL;
|
588 | 9f107513 | Anthony Liguori | |
589 | 9f107513 | Anthony Liguori | if (!QLIST_EMPTY(&s->free_list)) {
|
590 | 9f107513 | Anthony Liguori | pdu = QLIST_FIRST(&s->free_list); |
591 | 9f107513 | Anthony Liguori | QLIST_REMOVE(pdu, next); |
592 | 9f107513 | Anthony Liguori | } |
593 | 9f107513 | Anthony Liguori | return pdu;
|
594 | 9f107513 | Anthony Liguori | } |
595 | 9f107513 | Anthony Liguori | |
596 | 9f107513 | Anthony Liguori | static void free_pdu(V9fsState *s, V9fsPDU *pdu) |
597 | 9f107513 | Anthony Liguori | { |
598 | 9f107513 | Anthony Liguori | if (pdu) {
|
599 | 9f107513 | Anthony Liguori | QLIST_INSERT_HEAD(&s->free_list, pdu, next); |
600 | 9f107513 | Anthony Liguori | } |
601 | 9f107513 | Anthony Liguori | } |
602 | 9f107513 | Anthony Liguori | |
603 | 9f107513 | Anthony Liguori | size_t pdu_packunpack(void *addr, struct iovec *sg, int sg_count, |
604 | 9f107513 | Anthony Liguori | size_t offset, size_t size, int pack)
|
605 | 9f107513 | Anthony Liguori | { |
606 | 9f107513 | Anthony Liguori | int i = 0; |
607 | 9f107513 | Anthony Liguori | size_t copied = 0;
|
608 | 9f107513 | Anthony Liguori | |
609 | 9f107513 | Anthony Liguori | for (i = 0; size && i < sg_count; i++) { |
610 | 9f107513 | Anthony Liguori | size_t len; |
611 | 9f107513 | Anthony Liguori | if (offset >= sg[i].iov_len) {
|
612 | 9f107513 | Anthony Liguori | /* skip this sg */
|
613 | 9f107513 | Anthony Liguori | offset -= sg[i].iov_len; |
614 | 9f107513 | Anthony Liguori | continue;
|
615 | 9f107513 | Anthony Liguori | } else {
|
616 | 9f107513 | Anthony Liguori | len = MIN(sg[i].iov_len - offset, size); |
617 | 9f107513 | Anthony Liguori | if (pack) {
|
618 | 9f107513 | Anthony Liguori | memcpy(sg[i].iov_base + offset, addr, len); |
619 | 9f107513 | Anthony Liguori | } else {
|
620 | 9f107513 | Anthony Liguori | memcpy(addr, sg[i].iov_base + offset, len); |
621 | 9f107513 | Anthony Liguori | } |
622 | 9f107513 | Anthony Liguori | size -= len; |
623 | 9f107513 | Anthony Liguori | copied += len; |
624 | 9f107513 | Anthony Liguori | addr += len; |
625 | 9f107513 | Anthony Liguori | if (size) {
|
626 | 9f107513 | Anthony Liguori | offset = 0;
|
627 | 9f107513 | Anthony Liguori | continue;
|
628 | 9f107513 | Anthony Liguori | } |
629 | 9f107513 | Anthony Liguori | } |
630 | 9f107513 | Anthony Liguori | } |
631 | 9f107513 | Anthony Liguori | |
632 | 9f107513 | Anthony Liguori | return copied;
|
633 | 9f107513 | Anthony Liguori | } |
634 | 9f107513 | Anthony Liguori | |
635 | 405a549a | Anthony Liguori | static size_t pdu_unpack(void *dst, V9fsPDU *pdu, size_t offset, size_t size) |
636 | 405a549a | Anthony Liguori | { |
637 | 405a549a | Anthony Liguori | return pdu_packunpack(dst, pdu->elem.out_sg, pdu->elem.out_num,
|
638 | 405a549a | Anthony Liguori | offset, size, 0);
|
639 | 405a549a | Anthony Liguori | } |
640 | 405a549a | Anthony Liguori | |
641 | 405a549a | Anthony Liguori | static size_t pdu_pack(V9fsPDU *pdu, size_t offset, const void *src, |
642 | 405a549a | Anthony Liguori | size_t size) |
643 | 405a549a | Anthony Liguori | { |
644 | 405a549a | Anthony Liguori | return pdu_packunpack((void *)src, pdu->elem.in_sg, pdu->elem.in_num, |
645 | 405a549a | Anthony Liguori | offset, size, 1);
|
646 | 405a549a | Anthony Liguori | } |
647 | 405a549a | Anthony Liguori | |
648 | 405a549a | Anthony Liguori | static int pdu_copy_sg(V9fsPDU *pdu, size_t offset, int rx, struct iovec *sg) |
649 | 405a549a | Anthony Liguori | { |
650 | 405a549a | Anthony Liguori | size_t pos = 0;
|
651 | 405a549a | Anthony Liguori | int i, j;
|
652 | 405a549a | Anthony Liguori | struct iovec *src_sg;
|
653 | 405a549a | Anthony Liguori | unsigned int num; |
654 | 405a549a | Anthony Liguori | |
655 | 405a549a | Anthony Liguori | if (rx) {
|
656 | 405a549a | Anthony Liguori | src_sg = pdu->elem.in_sg; |
657 | 405a549a | Anthony Liguori | num = pdu->elem.in_num; |
658 | 405a549a | Anthony Liguori | } else {
|
659 | 405a549a | Anthony Liguori | src_sg = pdu->elem.out_sg; |
660 | 405a549a | Anthony Liguori | num = pdu->elem.out_num; |
661 | 405a549a | Anthony Liguori | } |
662 | 405a549a | Anthony Liguori | |
663 | 405a549a | Anthony Liguori | j = 0;
|
664 | 405a549a | Anthony Liguori | for (i = 0; i < num; i++) { |
665 | 405a549a | Anthony Liguori | if (offset <= pos) {
|
666 | 405a549a | Anthony Liguori | sg[j].iov_base = src_sg[i].iov_base; |
667 | 405a549a | Anthony Liguori | sg[j].iov_len = src_sg[i].iov_len; |
668 | 405a549a | Anthony Liguori | j++; |
669 | 405a549a | Anthony Liguori | } else if (offset < (src_sg[i].iov_len + pos)) { |
670 | 405a549a | Anthony Liguori | sg[j].iov_base = src_sg[i].iov_base; |
671 | 405a549a | Anthony Liguori | sg[j].iov_len = src_sg[i].iov_len; |
672 | 405a549a | Anthony Liguori | sg[j].iov_base += (offset - pos); |
673 | 405a549a | Anthony Liguori | sg[j].iov_len -= (offset - pos); |
674 | 405a549a | Anthony Liguori | j++; |
675 | 405a549a | Anthony Liguori | } |
676 | 405a549a | Anthony Liguori | pos += src_sg[i].iov_len; |
677 | 405a549a | Anthony Liguori | } |
678 | 405a549a | Anthony Liguori | |
679 | 405a549a | Anthony Liguori | return j;
|
680 | 405a549a | Anthony Liguori | } |
681 | 405a549a | Anthony Liguori | |
682 | 405a549a | Anthony Liguori | static size_t pdu_unmarshal(V9fsPDU *pdu, size_t offset, const char *fmt, ...) |
683 | 405a549a | Anthony Liguori | { |
684 | 405a549a | Anthony Liguori | size_t old_offset = offset; |
685 | 405a549a | Anthony Liguori | va_list ap; |
686 | 405a549a | Anthony Liguori | int i;
|
687 | 405a549a | Anthony Liguori | |
688 | 405a549a | Anthony Liguori | va_start(ap, fmt); |
689 | 405a549a | Anthony Liguori | for (i = 0; fmt[i]; i++) { |
690 | 405a549a | Anthony Liguori | switch (fmt[i]) {
|
691 | 405a549a | Anthony Liguori | case 'b': { |
692 | 405a549a | Anthony Liguori | uint8_t *valp = va_arg(ap, uint8_t *); |
693 | 405a549a | Anthony Liguori | offset += pdu_unpack(valp, pdu, offset, sizeof(*valp));
|
694 | 405a549a | Anthony Liguori | break;
|
695 | 405a549a | Anthony Liguori | } |
696 | 405a549a | Anthony Liguori | case 'w': { |
697 | 405a549a | Anthony Liguori | uint16_t val, *valp; |
698 | 405a549a | Anthony Liguori | valp = va_arg(ap, uint16_t *); |
699 | 405a549a | Anthony Liguori | val = le16_to_cpupu(valp); |
700 | 405a549a | Anthony Liguori | offset += pdu_unpack(&val, pdu, offset, sizeof(val));
|
701 | 405a549a | Anthony Liguori | *valp = val; |
702 | 405a549a | Anthony Liguori | break;
|
703 | 405a549a | Anthony Liguori | } |
704 | 405a549a | Anthony Liguori | case 'd': { |
705 | 405a549a | Anthony Liguori | uint32_t val, *valp; |
706 | 405a549a | Anthony Liguori | valp = va_arg(ap, uint32_t *); |
707 | 405a549a | Anthony Liguori | val = le32_to_cpupu(valp); |
708 | 405a549a | Anthony Liguori | offset += pdu_unpack(&val, pdu, offset, sizeof(val));
|
709 | 405a549a | Anthony Liguori | *valp = val; |
710 | 405a549a | Anthony Liguori | break;
|
711 | 405a549a | Anthony Liguori | } |
712 | 405a549a | Anthony Liguori | case 'q': { |
713 | 405a549a | Anthony Liguori | uint64_t val, *valp; |
714 | 405a549a | Anthony Liguori | valp = va_arg(ap, uint64_t *); |
715 | 405a549a | Anthony Liguori | val = le64_to_cpup(valp); |
716 | 405a549a | Anthony Liguori | offset += pdu_unpack(&val, pdu, offset, sizeof(val));
|
717 | 405a549a | Anthony Liguori | *valp = val; |
718 | 405a549a | Anthony Liguori | break;
|
719 | 405a549a | Anthony Liguori | } |
720 | 405a549a | Anthony Liguori | case 'v': { |
721 | 405a549a | Anthony Liguori | struct iovec *iov = va_arg(ap, struct iovec *); |
722 | 405a549a | Anthony Liguori | int *iovcnt = va_arg(ap, int *); |
723 | 405a549a | Anthony Liguori | *iovcnt = pdu_copy_sg(pdu, offset, 0, iov);
|
724 | 405a549a | Anthony Liguori | break;
|
725 | 405a549a | Anthony Liguori | } |
726 | 405a549a | Anthony Liguori | case 's': { |
727 | 405a549a | Anthony Liguori | V9fsString *str = va_arg(ap, V9fsString *); |
728 | 405a549a | Anthony Liguori | offset += pdu_unmarshal(pdu, offset, "w", &str->size);
|
729 | 405a549a | Anthony Liguori | /* FIXME: sanity check str->size */
|
730 | 405a549a | Anthony Liguori | str->data = qemu_malloc(str->size + 1);
|
731 | 405a549a | Anthony Liguori | offset += pdu_unpack(str->data, pdu, offset, str->size); |
732 | 405a549a | Anthony Liguori | str->data[str->size] = 0;
|
733 | 405a549a | Anthony Liguori | break;
|
734 | 405a549a | Anthony Liguori | } |
735 | 405a549a | Anthony Liguori | case 'Q': { |
736 | 405a549a | Anthony Liguori | V9fsQID *qidp = va_arg(ap, V9fsQID *); |
737 | 405a549a | Anthony Liguori | offset += pdu_unmarshal(pdu, offset, "bdq",
|
738 | 405a549a | Anthony Liguori | &qidp->type, &qidp->version, &qidp->path); |
739 | 405a549a | Anthony Liguori | break;
|
740 | 405a549a | Anthony Liguori | } |
741 | 405a549a | Anthony Liguori | case 'S': { |
742 | 405a549a | Anthony Liguori | V9fsStat *statp = va_arg(ap, V9fsStat *); |
743 | 405a549a | Anthony Liguori | offset += pdu_unmarshal(pdu, offset, "wwdQdddqsssssddd",
|
744 | 405a549a | Anthony Liguori | &statp->size, &statp->type, &statp->dev, |
745 | 405a549a | Anthony Liguori | &statp->qid, &statp->mode, &statp->atime, |
746 | 405a549a | Anthony Liguori | &statp->mtime, &statp->length, |
747 | 405a549a | Anthony Liguori | &statp->name, &statp->uid, &statp->gid, |
748 | 405a549a | Anthony Liguori | &statp->muid, &statp->extension, |
749 | 405a549a | Anthony Liguori | &statp->n_uid, &statp->n_gid, |
750 | 405a549a | Anthony Liguori | &statp->n_muid); |
751 | 405a549a | Anthony Liguori | break;
|
752 | 405a549a | Anthony Liguori | } |
753 | c79ce737 | Sripathi Kodi | case 'I': { |
754 | c79ce737 | Sripathi Kodi | V9fsIattr *iattr = va_arg(ap, V9fsIattr *); |
755 | c79ce737 | Sripathi Kodi | offset += pdu_unmarshal(pdu, offset, "ddddqqqqq",
|
756 | c79ce737 | Sripathi Kodi | &iattr->valid, &iattr->mode, |
757 | c79ce737 | Sripathi Kodi | &iattr->uid, &iattr->gid, &iattr->size, |
758 | c79ce737 | Sripathi Kodi | &iattr->atime_sec, &iattr->atime_nsec, |
759 | c79ce737 | Sripathi Kodi | &iattr->mtime_sec, &iattr->mtime_nsec); |
760 | c79ce737 | Sripathi Kodi | break;
|
761 | c79ce737 | Sripathi Kodi | } |
762 | 405a549a | Anthony Liguori | default:
|
763 | 405a549a | Anthony Liguori | break;
|
764 | 405a549a | Anthony Liguori | } |
765 | 405a549a | Anthony Liguori | } |
766 | 405a549a | Anthony Liguori | |
767 | 405a549a | Anthony Liguori | va_end(ap); |
768 | 405a549a | Anthony Liguori | |
769 | 405a549a | Anthony Liguori | return offset - old_offset;
|
770 | 405a549a | Anthony Liguori | } |
771 | 405a549a | Anthony Liguori | |
772 | 405a549a | Anthony Liguori | static size_t pdu_marshal(V9fsPDU *pdu, size_t offset, const char *fmt, ...) |
773 | 405a549a | Anthony Liguori | { |
774 | 405a549a | Anthony Liguori | size_t old_offset = offset; |
775 | 405a549a | Anthony Liguori | va_list ap; |
776 | 405a549a | Anthony Liguori | int i;
|
777 | 405a549a | Anthony Liguori | |
778 | 405a549a | Anthony Liguori | va_start(ap, fmt); |
779 | 405a549a | Anthony Liguori | for (i = 0; fmt[i]; i++) { |
780 | 405a549a | Anthony Liguori | switch (fmt[i]) {
|
781 | 405a549a | Anthony Liguori | case 'b': { |
782 | 405a549a | Anthony Liguori | uint8_t val = va_arg(ap, int);
|
783 | 405a549a | Anthony Liguori | offset += pdu_pack(pdu, offset, &val, sizeof(val));
|
784 | 405a549a | Anthony Liguori | break;
|
785 | 405a549a | Anthony Liguori | } |
786 | 405a549a | Anthony Liguori | case 'w': { |
787 | 405a549a | Anthony Liguori | uint16_t val; |
788 | 405a549a | Anthony Liguori | cpu_to_le16w(&val, va_arg(ap, int));
|
789 | 405a549a | Anthony Liguori | offset += pdu_pack(pdu, offset, &val, sizeof(val));
|
790 | 405a549a | Anthony Liguori | break;
|
791 | 405a549a | Anthony Liguori | } |
792 | 405a549a | Anthony Liguori | case 'd': { |
793 | 405a549a | Anthony Liguori | uint32_t val; |
794 | 405a549a | Anthony Liguori | cpu_to_le32w(&val, va_arg(ap, uint32_t)); |
795 | 405a549a | Anthony Liguori | offset += pdu_pack(pdu, offset, &val, sizeof(val));
|
796 | 405a549a | Anthony Liguori | break;
|
797 | 405a549a | Anthony Liguori | } |
798 | 405a549a | Anthony Liguori | case 'q': { |
799 | 405a549a | Anthony Liguori | uint64_t val; |
800 | 405a549a | Anthony Liguori | cpu_to_le64w(&val, va_arg(ap, uint64_t)); |
801 | 405a549a | Anthony Liguori | offset += pdu_pack(pdu, offset, &val, sizeof(val));
|
802 | 405a549a | Anthony Liguori | break;
|
803 | 405a549a | Anthony Liguori | } |
804 | 405a549a | Anthony Liguori | case 'v': { |
805 | 405a549a | Anthony Liguori | struct iovec *iov = va_arg(ap, struct iovec *); |
806 | 405a549a | Anthony Liguori | int *iovcnt = va_arg(ap, int *); |
807 | 405a549a | Anthony Liguori | *iovcnt = pdu_copy_sg(pdu, offset, 1, iov);
|
808 | 405a549a | Anthony Liguori | break;
|
809 | 405a549a | Anthony Liguori | } |
810 | 405a549a | Anthony Liguori | case 's': { |
811 | 405a549a | Anthony Liguori | V9fsString *str = va_arg(ap, V9fsString *); |
812 | 405a549a | Anthony Liguori | offset += pdu_marshal(pdu, offset, "w", str->size);
|
813 | 405a549a | Anthony Liguori | offset += pdu_pack(pdu, offset, str->data, str->size); |
814 | 405a549a | Anthony Liguori | break;
|
815 | 405a549a | Anthony Liguori | } |
816 | 405a549a | Anthony Liguori | case 'Q': { |
817 | 405a549a | Anthony Liguori | V9fsQID *qidp = va_arg(ap, V9fsQID *); |
818 | 405a549a | Anthony Liguori | offset += pdu_marshal(pdu, offset, "bdq",
|
819 | 405a549a | Anthony Liguori | qidp->type, qidp->version, qidp->path); |
820 | 405a549a | Anthony Liguori | break;
|
821 | 405a549a | Anthony Liguori | } |
822 | 405a549a | Anthony Liguori | case 'S': { |
823 | 405a549a | Anthony Liguori | V9fsStat *statp = va_arg(ap, V9fsStat *); |
824 | 405a549a | Anthony Liguori | offset += pdu_marshal(pdu, offset, "wwdQdddqsssssddd",
|
825 | 405a549a | Anthony Liguori | statp->size, statp->type, statp->dev, |
826 | 405a549a | Anthony Liguori | &statp->qid, statp->mode, statp->atime, |
827 | 405a549a | Anthony Liguori | statp->mtime, statp->length, &statp->name, |
828 | 405a549a | Anthony Liguori | &statp->uid, &statp->gid, &statp->muid, |
829 | 405a549a | Anthony Liguori | &statp->extension, statp->n_uid, |
830 | 405a549a | Anthony Liguori | statp->n_gid, statp->n_muid); |
831 | 405a549a | Anthony Liguori | break;
|
832 | 405a549a | Anthony Liguori | } |
833 | 00ede4c2 | Sripathi Kodi | case 'A': { |
834 | 00ede4c2 | Sripathi Kodi | V9fsStatDotl *statp = va_arg(ap, V9fsStatDotl *); |
835 | 00ede4c2 | Sripathi Kodi | offset += pdu_marshal(pdu, offset, "qQdddqqqqqqqqqqqqqqq",
|
836 | 00ede4c2 | Sripathi Kodi | statp->st_result_mask, |
837 | 00ede4c2 | Sripathi Kodi | &statp->qid, statp->st_mode, |
838 | 00ede4c2 | Sripathi Kodi | statp->st_uid, statp->st_gid, |
839 | 00ede4c2 | Sripathi Kodi | statp->st_nlink, statp->st_rdev, |
840 | 00ede4c2 | Sripathi Kodi | statp->st_size, statp->st_blksize, statp->st_blocks, |
841 | 00ede4c2 | Sripathi Kodi | statp->st_atime_sec, statp->st_atime_nsec, |
842 | 00ede4c2 | Sripathi Kodi | statp->st_mtime_sec, statp->st_mtime_nsec, |
843 | 00ede4c2 | Sripathi Kodi | statp->st_ctime_sec, statp->st_ctime_nsec, |
844 | 00ede4c2 | Sripathi Kodi | statp->st_btime_sec, statp->st_btime_nsec, |
845 | 00ede4c2 | Sripathi Kodi | statp->st_gen, statp->st_data_version); |
846 | 00ede4c2 | Sripathi Kodi | break;
|
847 | 00ede4c2 | Sripathi Kodi | } |
848 | 405a549a | Anthony Liguori | default:
|
849 | 405a549a | Anthony Liguori | break;
|
850 | 405a549a | Anthony Liguori | } |
851 | 405a549a | Anthony Liguori | } |
852 | 405a549a | Anthony Liguori | va_end(ap); |
853 | 405a549a | Anthony Liguori | |
854 | 405a549a | Anthony Liguori | return offset - old_offset;
|
855 | 405a549a | Anthony Liguori | } |
856 | 405a549a | Anthony Liguori | |
857 | 405a549a | Anthony Liguori | static void complete_pdu(V9fsState *s, V9fsPDU *pdu, ssize_t len) |
858 | 405a549a | Anthony Liguori | { |
859 | 405a549a | Anthony Liguori | int8_t id = pdu->id + 1; /* Response */ |
860 | 405a549a | Anthony Liguori | |
861 | 405a549a | Anthony Liguori | if (len < 0) { |
862 | 405a549a | Anthony Liguori | int err = -len;
|
863 | 8f4d1ca5 | Arun R Bharadwaj | len = 7;
|
864 | 405a549a | Anthony Liguori | |
865 | 8f4d1ca5 | Arun R Bharadwaj | if (s->proto_version != V9FS_PROTO_2000L) {
|
866 | 8f4d1ca5 | Arun R Bharadwaj | V9fsString str; |
867 | 8f4d1ca5 | Arun R Bharadwaj | |
868 | 8f4d1ca5 | Arun R Bharadwaj | str.data = strerror(err); |
869 | 8f4d1ca5 | Arun R Bharadwaj | str.size = strlen(str.data); |
870 | 8f4d1ca5 | Arun R Bharadwaj | |
871 | 8f4d1ca5 | Arun R Bharadwaj | len += pdu_marshal(pdu, len, "s", &str);
|
872 | 8f4d1ca5 | Arun R Bharadwaj | id = P9_RERROR; |
873 | 8f4d1ca5 | Arun R Bharadwaj | } |
874 | 405a549a | Anthony Liguori | |
875 | cf03eb2c | Arun R Bharadwaj | len += pdu_marshal(pdu, len, "d", err);
|
876 | 405a549a | Anthony Liguori | |
877 | 8f4d1ca5 | Arun R Bharadwaj | if (s->proto_version == V9FS_PROTO_2000L) {
|
878 | 8f4d1ca5 | Arun R Bharadwaj | id = P9_RLERROR; |
879 | 8f4d1ca5 | Arun R Bharadwaj | } |
880 | 405a549a | Anthony Liguori | } |
881 | 405a549a | Anthony Liguori | |
882 | 405a549a | Anthony Liguori | /* fill out the header */
|
883 | 405a549a | Anthony Liguori | pdu_marshal(pdu, 0, "dbw", (int32_t)len, id, pdu->tag); |
884 | 405a549a | Anthony Liguori | |
885 | 405a549a | Anthony Liguori | /* keep these in sync */
|
886 | 405a549a | Anthony Liguori | pdu->size = len; |
887 | 405a549a | Anthony Liguori | pdu->id = id; |
888 | 405a549a | Anthony Liguori | |
889 | 405a549a | Anthony Liguori | /* push onto queue and notify */
|
890 | 405a549a | Anthony Liguori | virtqueue_push(s->vq, &pdu->elem, len); |
891 | 405a549a | Anthony Liguori | |
892 | 405a549a | Anthony Liguori | /* FIXME: we should batch these completions */
|
893 | 405a549a | Anthony Liguori | virtio_notify(&s->vdev, s->vq); |
894 | 405a549a | Anthony Liguori | |
895 | 405a549a | Anthony Liguori | free_pdu(s, pdu); |
896 | 405a549a | Anthony Liguori | } |
897 | 405a549a | Anthony Liguori | |
898 | bb9e3216 | Anthony Liguori | static mode_t v9mode_to_mode(uint32_t mode, V9fsString *extension)
|
899 | bb9e3216 | Anthony Liguori | { |
900 | bb9e3216 | Anthony Liguori | mode_t ret; |
901 | bb9e3216 | Anthony Liguori | |
902 | bb9e3216 | Anthony Liguori | ret = mode & 0777;
|
903 | bb9e3216 | Anthony Liguori | if (mode & P9_STAT_MODE_DIR) {
|
904 | bb9e3216 | Anthony Liguori | ret |= S_IFDIR; |
905 | bb9e3216 | Anthony Liguori | } |
906 | bb9e3216 | Anthony Liguori | |
907 | cf03eb2c | Arun R Bharadwaj | if (mode & P9_STAT_MODE_SYMLINK) {
|
908 | cf03eb2c | Arun R Bharadwaj | ret |= S_IFLNK; |
909 | cf03eb2c | Arun R Bharadwaj | } |
910 | cf03eb2c | Arun R Bharadwaj | if (mode & P9_STAT_MODE_SOCKET) {
|
911 | cf03eb2c | Arun R Bharadwaj | ret |= S_IFSOCK; |
912 | cf03eb2c | Arun R Bharadwaj | } |
913 | cf03eb2c | Arun R Bharadwaj | if (mode & P9_STAT_MODE_NAMED_PIPE) {
|
914 | cf03eb2c | Arun R Bharadwaj | ret |= S_IFIFO; |
915 | cf03eb2c | Arun R Bharadwaj | } |
916 | cf03eb2c | Arun R Bharadwaj | if (mode & P9_STAT_MODE_DEVICE) {
|
917 | cf03eb2c | Arun R Bharadwaj | if (extension && extension->data[0] == 'c') { |
918 | cf03eb2c | Arun R Bharadwaj | ret |= S_IFCHR; |
919 | cf03eb2c | Arun R Bharadwaj | } else {
|
920 | cf03eb2c | Arun R Bharadwaj | ret |= S_IFBLK; |
921 | bb9e3216 | Anthony Liguori | } |
922 | bb9e3216 | Anthony Liguori | } |
923 | bb9e3216 | Anthony Liguori | |
924 | bb9e3216 | Anthony Liguori | if (!(ret&~0777)) { |
925 | bb9e3216 | Anthony Liguori | ret |= S_IFREG; |
926 | bb9e3216 | Anthony Liguori | } |
927 | bb9e3216 | Anthony Liguori | |
928 | bb9e3216 | Anthony Liguori | if (mode & P9_STAT_MODE_SETUID) {
|
929 | bb9e3216 | Anthony Liguori | ret |= S_ISUID; |
930 | bb9e3216 | Anthony Liguori | } |
931 | bb9e3216 | Anthony Liguori | if (mode & P9_STAT_MODE_SETGID) {
|
932 | bb9e3216 | Anthony Liguori | ret |= S_ISGID; |
933 | bb9e3216 | Anthony Liguori | } |
934 | bb9e3216 | Anthony Liguori | if (mode & P9_STAT_MODE_SETVTX) {
|
935 | bb9e3216 | Anthony Liguori | ret |= S_ISVTX; |
936 | bb9e3216 | Anthony Liguori | } |
937 | bb9e3216 | Anthony Liguori | |
938 | bb9e3216 | Anthony Liguori | return ret;
|
939 | bb9e3216 | Anthony Liguori | } |
940 | bb9e3216 | Anthony Liguori | |
941 | bb9e3216 | Anthony Liguori | static int donttouch_stat(V9fsStat *stat) |
942 | bb9e3216 | Anthony Liguori | { |
943 | bb9e3216 | Anthony Liguori | if (stat->type == -1 && |
944 | bb9e3216 | Anthony Liguori | stat->dev == -1 &&
|
945 | bb9e3216 | Anthony Liguori | stat->qid.type == -1 &&
|
946 | bb9e3216 | Anthony Liguori | stat->qid.version == -1 &&
|
947 | bb9e3216 | Anthony Liguori | stat->qid.path == -1 &&
|
948 | bb9e3216 | Anthony Liguori | stat->mode == -1 &&
|
949 | bb9e3216 | Anthony Liguori | stat->atime == -1 &&
|
950 | bb9e3216 | Anthony Liguori | stat->mtime == -1 &&
|
951 | bb9e3216 | Anthony Liguori | stat->length == -1 &&
|
952 | bb9e3216 | Anthony Liguori | !stat->name.size && |
953 | bb9e3216 | Anthony Liguori | !stat->uid.size && |
954 | bb9e3216 | Anthony Liguori | !stat->gid.size && |
955 | bb9e3216 | Anthony Liguori | !stat->muid.size && |
956 | bb9e3216 | Anthony Liguori | stat->n_uid == -1 &&
|
957 | bb9e3216 | Anthony Liguori | stat->n_gid == -1 &&
|
958 | bb9e3216 | Anthony Liguori | stat->n_muid == -1) {
|
959 | bb9e3216 | Anthony Liguori | return 1; |
960 | bb9e3216 | Anthony Liguori | } |
961 | bb9e3216 | Anthony Liguori | |
962 | bb9e3216 | Anthony Liguori | return 0; |
963 | bb9e3216 | Anthony Liguori | } |
964 | bb9e3216 | Anthony Liguori | |
965 | bb9e3216 | Anthony Liguori | static void v9fs_stat_free(V9fsStat *stat) |
966 | bb9e3216 | Anthony Liguori | { |
967 | bb9e3216 | Anthony Liguori | v9fs_string_free(&stat->name); |
968 | bb9e3216 | Anthony Liguori | v9fs_string_free(&stat->uid); |
969 | bb9e3216 | Anthony Liguori | v9fs_string_free(&stat->gid); |
970 | bb9e3216 | Anthony Liguori | v9fs_string_free(&stat->muid); |
971 | bb9e3216 | Anthony Liguori | v9fs_string_free(&stat->extension); |
972 | bb9e3216 | Anthony Liguori | } |
973 | bb9e3216 | Anthony Liguori | |
974 | bb9e3216 | Anthony Liguori | static uint32_t stat_to_v9mode(const struct stat *stbuf) |
975 | bb9e3216 | Anthony Liguori | { |
976 | bb9e3216 | Anthony Liguori | uint32_t mode; |
977 | bb9e3216 | Anthony Liguori | |
978 | bb9e3216 | Anthony Liguori | mode = stbuf->st_mode & 0777;
|
979 | bb9e3216 | Anthony Liguori | if (S_ISDIR(stbuf->st_mode)) {
|
980 | bb9e3216 | Anthony Liguori | mode |= P9_STAT_MODE_DIR; |
981 | bb9e3216 | Anthony Liguori | } |
982 | bb9e3216 | Anthony Liguori | |
983 | cf03eb2c | Arun R Bharadwaj | if (S_ISLNK(stbuf->st_mode)) {
|
984 | cf03eb2c | Arun R Bharadwaj | mode |= P9_STAT_MODE_SYMLINK; |
985 | cf03eb2c | Arun R Bharadwaj | } |
986 | bb9e3216 | Anthony Liguori | |
987 | cf03eb2c | Arun R Bharadwaj | if (S_ISSOCK(stbuf->st_mode)) {
|
988 | cf03eb2c | Arun R Bharadwaj | mode |= P9_STAT_MODE_SOCKET; |
989 | cf03eb2c | Arun R Bharadwaj | } |
990 | bb9e3216 | Anthony Liguori | |
991 | cf03eb2c | Arun R Bharadwaj | if (S_ISFIFO(stbuf->st_mode)) {
|
992 | cf03eb2c | Arun R Bharadwaj | mode |= P9_STAT_MODE_NAMED_PIPE; |
993 | cf03eb2c | Arun R Bharadwaj | } |
994 | bb9e3216 | Anthony Liguori | |
995 | cf03eb2c | Arun R Bharadwaj | if (S_ISBLK(stbuf->st_mode) || S_ISCHR(stbuf->st_mode)) {
|
996 | cf03eb2c | Arun R Bharadwaj | mode |= P9_STAT_MODE_DEVICE; |
997 | cf03eb2c | Arun R Bharadwaj | } |
998 | bb9e3216 | Anthony Liguori | |
999 | cf03eb2c | Arun R Bharadwaj | if (stbuf->st_mode & S_ISUID) {
|
1000 | cf03eb2c | Arun R Bharadwaj | mode |= P9_STAT_MODE_SETUID; |
1001 | cf03eb2c | Arun R Bharadwaj | } |
1002 | bb9e3216 | Anthony Liguori | |
1003 | cf03eb2c | Arun R Bharadwaj | if (stbuf->st_mode & S_ISGID) {
|
1004 | cf03eb2c | Arun R Bharadwaj | mode |= P9_STAT_MODE_SETGID; |
1005 | cf03eb2c | Arun R Bharadwaj | } |
1006 | bb9e3216 | Anthony Liguori | |
1007 | cf03eb2c | Arun R Bharadwaj | if (stbuf->st_mode & S_ISVTX) {
|
1008 | cf03eb2c | Arun R Bharadwaj | mode |= P9_STAT_MODE_SETVTX; |
1009 | bb9e3216 | Anthony Liguori | } |
1010 | bb9e3216 | Anthony Liguori | |
1011 | bb9e3216 | Anthony Liguori | return mode;
|
1012 | bb9e3216 | Anthony Liguori | } |
1013 | bb9e3216 | Anthony Liguori | |
1014 | bb9e3216 | Anthony Liguori | static int stat_to_v9stat(V9fsState *s, V9fsString *name, |
1015 | bb9e3216 | Anthony Liguori | const struct stat *stbuf, |
1016 | bb9e3216 | Anthony Liguori | V9fsStat *v9stat) |
1017 | bb9e3216 | Anthony Liguori | { |
1018 | bb9e3216 | Anthony Liguori | int err;
|
1019 | bb9e3216 | Anthony Liguori | const char *str; |
1020 | bb9e3216 | Anthony Liguori | |
1021 | bb9e3216 | Anthony Liguori | memset(v9stat, 0, sizeof(*v9stat)); |
1022 | bb9e3216 | Anthony Liguori | |
1023 | bb9e3216 | Anthony Liguori | stat_to_qid(stbuf, &v9stat->qid); |
1024 | bb9e3216 | Anthony Liguori | v9stat->mode = stat_to_v9mode(stbuf); |
1025 | bb9e3216 | Anthony Liguori | v9stat->atime = stbuf->st_atime; |
1026 | bb9e3216 | Anthony Liguori | v9stat->mtime = stbuf->st_mtime; |
1027 | bb9e3216 | Anthony Liguori | v9stat->length = stbuf->st_size; |
1028 | bb9e3216 | Anthony Liguori | |
1029 | bb9e3216 | Anthony Liguori | v9fs_string_null(&v9stat->uid); |
1030 | bb9e3216 | Anthony Liguori | v9fs_string_null(&v9stat->gid); |
1031 | bb9e3216 | Anthony Liguori | v9fs_string_null(&v9stat->muid); |
1032 | bb9e3216 | Anthony Liguori | |
1033 | cf03eb2c | Arun R Bharadwaj | v9stat->n_uid = stbuf->st_uid; |
1034 | cf03eb2c | Arun R Bharadwaj | v9stat->n_gid = stbuf->st_gid; |
1035 | cf03eb2c | Arun R Bharadwaj | v9stat->n_muid = 0;
|
1036 | bb9e3216 | Anthony Liguori | |
1037 | cf03eb2c | Arun R Bharadwaj | v9fs_string_null(&v9stat->extension); |
1038 | bb9e3216 | Anthony Liguori | |
1039 | cf03eb2c | Arun R Bharadwaj | if (v9stat->mode & P9_STAT_MODE_SYMLINK) {
|
1040 | cf03eb2c | Arun R Bharadwaj | err = v9fs_do_readlink(s, name, &v9stat->extension); |
1041 | cf03eb2c | Arun R Bharadwaj | if (err == -1) { |
1042 | cf03eb2c | Arun R Bharadwaj | err = -errno; |
1043 | cf03eb2c | Arun R Bharadwaj | return err;
|
1044 | bb9e3216 | Anthony Liguori | } |
1045 | cf03eb2c | Arun R Bharadwaj | v9stat->extension.data[err] = 0;
|
1046 | cf03eb2c | Arun R Bharadwaj | v9stat->extension.size = err; |
1047 | cf03eb2c | Arun R Bharadwaj | } else if (v9stat->mode & P9_STAT_MODE_DEVICE) { |
1048 | cf03eb2c | Arun R Bharadwaj | v9fs_string_sprintf(&v9stat->extension, "%c %u %u",
|
1049 | cf03eb2c | Arun R Bharadwaj | S_ISCHR(stbuf->st_mode) ? 'c' : 'b', |
1050 | cf03eb2c | Arun R Bharadwaj | major(stbuf->st_rdev), minor(stbuf->st_rdev)); |
1051 | cf03eb2c | Arun R Bharadwaj | } else if (S_ISDIR(stbuf->st_mode) || S_ISREG(stbuf->st_mode)) { |
1052 | c9ba47dc | Stefan Weil | v9fs_string_sprintf(&v9stat->extension, "%s %lu",
|
1053 | c9ba47dc | Stefan Weil | "HARDLINKCOUNT", (unsigned long)stbuf->st_nlink); |
1054 | bb9e3216 | Anthony Liguori | } |
1055 | bb9e3216 | Anthony Liguori | |
1056 | bb9e3216 | Anthony Liguori | str = strrchr(name->data, '/');
|
1057 | bb9e3216 | Anthony Liguori | if (str) {
|
1058 | bb9e3216 | Anthony Liguori | str += 1;
|
1059 | bb9e3216 | Anthony Liguori | } else {
|
1060 | bb9e3216 | Anthony Liguori | str = name->data; |
1061 | bb9e3216 | Anthony Liguori | } |
1062 | bb9e3216 | Anthony Liguori | |
1063 | bb9e3216 | Anthony Liguori | v9fs_string_sprintf(&v9stat->name, "%s", str);
|
1064 | bb9e3216 | Anthony Liguori | |
1065 | bb9e3216 | Anthony Liguori | v9stat->size = 61 +
|
1066 | bb9e3216 | Anthony Liguori | v9fs_string_size(&v9stat->name) + |
1067 | bb9e3216 | Anthony Liguori | v9fs_string_size(&v9stat->uid) + |
1068 | bb9e3216 | Anthony Liguori | v9fs_string_size(&v9stat->gid) + |
1069 | bb9e3216 | Anthony Liguori | v9fs_string_size(&v9stat->muid) + |
1070 | bb9e3216 | Anthony Liguori | v9fs_string_size(&v9stat->extension); |
1071 | bb9e3216 | Anthony Liguori | return 0; |
1072 | bb9e3216 | Anthony Liguori | } |
1073 | bb9e3216 | Anthony Liguori | |
1074 | 00ede4c2 | Sripathi Kodi | #define P9_STATS_MODE 0x00000001ULL |
1075 | 00ede4c2 | Sripathi Kodi | #define P9_STATS_NLINK 0x00000002ULL |
1076 | 00ede4c2 | Sripathi Kodi | #define P9_STATS_UID 0x00000004ULL |
1077 | 00ede4c2 | Sripathi Kodi | #define P9_STATS_GID 0x00000008ULL |
1078 | 00ede4c2 | Sripathi Kodi | #define P9_STATS_RDEV 0x00000010ULL |
1079 | 00ede4c2 | Sripathi Kodi | #define P9_STATS_ATIME 0x00000020ULL |
1080 | 00ede4c2 | Sripathi Kodi | #define P9_STATS_MTIME 0x00000040ULL |
1081 | 00ede4c2 | Sripathi Kodi | #define P9_STATS_CTIME 0x00000080ULL |
1082 | 00ede4c2 | Sripathi Kodi | #define P9_STATS_INO 0x00000100ULL |
1083 | 00ede4c2 | Sripathi Kodi | #define P9_STATS_SIZE 0x00000200ULL |
1084 | 00ede4c2 | Sripathi Kodi | #define P9_STATS_BLOCKS 0x00000400ULL |
1085 | 00ede4c2 | Sripathi Kodi | |
1086 | 00ede4c2 | Sripathi Kodi | #define P9_STATS_BTIME 0x00000800ULL |
1087 | 00ede4c2 | Sripathi Kodi | #define P9_STATS_GEN 0x00001000ULL |
1088 | 00ede4c2 | Sripathi Kodi | #define P9_STATS_DATA_VERSION 0x00002000ULL |
1089 | 00ede4c2 | Sripathi Kodi | |
1090 | 00ede4c2 | Sripathi Kodi | #define P9_STATS_BASIC 0x000007ffULL /* Mask for fields up to BLOCKS */ |
1091 | 00ede4c2 | Sripathi Kodi | #define P9_STATS_ALL 0x00003fffULL /* Mask for All fields above */ |
1092 | 00ede4c2 | Sripathi Kodi | |
1093 | 00ede4c2 | Sripathi Kodi | |
1094 | 00ede4c2 | Sripathi Kodi | static void stat_to_v9stat_dotl(V9fsState *s, const struct stat *stbuf, |
1095 | 00ede4c2 | Sripathi Kodi | V9fsStatDotl *v9lstat) |
1096 | 00ede4c2 | Sripathi Kodi | { |
1097 | 00ede4c2 | Sripathi Kodi | memset(v9lstat, 0, sizeof(*v9lstat)); |
1098 | 00ede4c2 | Sripathi Kodi | |
1099 | 00ede4c2 | Sripathi Kodi | v9lstat->st_mode = stbuf->st_mode; |
1100 | 00ede4c2 | Sripathi Kodi | v9lstat->st_nlink = stbuf->st_nlink; |
1101 | 00ede4c2 | Sripathi Kodi | v9lstat->st_uid = stbuf->st_uid; |
1102 | 00ede4c2 | Sripathi Kodi | v9lstat->st_gid = stbuf->st_gid; |
1103 | 00ede4c2 | Sripathi Kodi | v9lstat->st_rdev = stbuf->st_rdev; |
1104 | 00ede4c2 | Sripathi Kodi | v9lstat->st_size = stbuf->st_size; |
1105 | 00ede4c2 | Sripathi Kodi | v9lstat->st_blksize = stbuf->st_blksize; |
1106 | 00ede4c2 | Sripathi Kodi | v9lstat->st_blocks = stbuf->st_blocks; |
1107 | 00ede4c2 | Sripathi Kodi | v9lstat->st_atime_sec = stbuf->st_atime; |
1108 | 00ede4c2 | Sripathi Kodi | v9lstat->st_atime_nsec = stbuf->st_atim.tv_nsec; |
1109 | 00ede4c2 | Sripathi Kodi | v9lstat->st_mtime_sec = stbuf->st_mtime; |
1110 | 00ede4c2 | Sripathi Kodi | v9lstat->st_mtime_nsec = stbuf->st_mtim.tv_nsec; |
1111 | 00ede4c2 | Sripathi Kodi | v9lstat->st_ctime_sec = stbuf->st_ctime; |
1112 | 00ede4c2 | Sripathi Kodi | v9lstat->st_ctime_nsec = stbuf->st_ctim.tv_nsec; |
1113 | 00ede4c2 | Sripathi Kodi | /* Currently we only support BASIC fields in stat */
|
1114 | 00ede4c2 | Sripathi Kodi | v9lstat->st_result_mask = P9_STATS_BASIC; |
1115 | 00ede4c2 | Sripathi Kodi | |
1116 | 00ede4c2 | Sripathi Kodi | stat_to_qid(stbuf, &v9lstat->qid); |
1117 | 00ede4c2 | Sripathi Kodi | } |
1118 | 00ede4c2 | Sripathi Kodi | |
1119 | 1f5a89bf | Anthony Liguori | static struct iovec *adjust_sg(struct iovec *sg, int len, int *iovcnt) |
1120 | 1f5a89bf | Anthony Liguori | { |
1121 | 1f5a89bf | Anthony Liguori | while (len && *iovcnt) {
|
1122 | 1f5a89bf | Anthony Liguori | if (len < sg->iov_len) {
|
1123 | 1f5a89bf | Anthony Liguori | sg->iov_len -= len; |
1124 | 1f5a89bf | Anthony Liguori | sg->iov_base += len; |
1125 | 1f5a89bf | Anthony Liguori | len = 0;
|
1126 | 1f5a89bf | Anthony Liguori | } else {
|
1127 | 1f5a89bf | Anthony Liguori | len -= sg->iov_len; |
1128 | 1f5a89bf | Anthony Liguori | sg++; |
1129 | 1f5a89bf | Anthony Liguori | *iovcnt -= 1;
|
1130 | 1f5a89bf | Anthony Liguori | } |
1131 | 1f5a89bf | Anthony Liguori | } |
1132 | 1f5a89bf | Anthony Liguori | |
1133 | 1f5a89bf | Anthony Liguori | return sg;
|
1134 | 1f5a89bf | Anthony Liguori | } |
1135 | 1f5a89bf | Anthony Liguori | |
1136 | 1f5a89bf | Anthony Liguori | static struct iovec *cap_sg(struct iovec *sg, int cap, int *cnt) |
1137 | 1f5a89bf | Anthony Liguori | { |
1138 | 1f5a89bf | Anthony Liguori | int i;
|
1139 | 1f5a89bf | Anthony Liguori | int total = 0; |
1140 | 1f5a89bf | Anthony Liguori | |
1141 | 1f5a89bf | Anthony Liguori | for (i = 0; i < *cnt; i++) { |
1142 | 1f5a89bf | Anthony Liguori | if ((total + sg[i].iov_len) > cap) {
|
1143 | 1f5a89bf | Anthony Liguori | sg[i].iov_len -= ((total + sg[i].iov_len) - cap); |
1144 | 1f5a89bf | Anthony Liguori | i++; |
1145 | 1f5a89bf | Anthony Liguori | break;
|
1146 | 1f5a89bf | Anthony Liguori | } |
1147 | 1f5a89bf | Anthony Liguori | total += sg[i].iov_len; |
1148 | 1f5a89bf | Anthony Liguori | } |
1149 | 1f5a89bf | Anthony Liguori | |
1150 | 1f5a89bf | Anthony Liguori | *cnt = i; |
1151 | 1f5a89bf | Anthony Liguori | |
1152 | 1f5a89bf | Anthony Liguori | return sg;
|
1153 | 1f5a89bf | Anthony Liguori | } |
1154 | 1f5a89bf | Anthony Liguori | |
1155 | 1f5a89bf | Anthony Liguori | static void print_sg(struct iovec *sg, int cnt) |
1156 | 1f5a89bf | Anthony Liguori | { |
1157 | 1f5a89bf | Anthony Liguori | int i;
|
1158 | 1f5a89bf | Anthony Liguori | |
1159 | 1f5a89bf | Anthony Liguori | printf("sg[%d]: {", cnt);
|
1160 | 1f5a89bf | Anthony Liguori | for (i = 0; i < cnt; i++) { |
1161 | 1f5a89bf | Anthony Liguori | if (i) {
|
1162 | 1f5a89bf | Anthony Liguori | printf(", ");
|
1163 | 1f5a89bf | Anthony Liguori | } |
1164 | 1f5a89bf | Anthony Liguori | printf("(%p, %zd)", sg[i].iov_base, sg[i].iov_len);
|
1165 | 1f5a89bf | Anthony Liguori | } |
1166 | 1f5a89bf | Anthony Liguori | printf("}\n");
|
1167 | 1f5a89bf | Anthony Liguori | } |
1168 | 1f5a89bf | Anthony Liguori | |
1169 | 8cf89e00 | Anthony Liguori | static void v9fs_fix_path(V9fsString *dst, V9fsString *src, int len) |
1170 | 8cf89e00 | Anthony Liguori | { |
1171 | 8cf89e00 | Anthony Liguori | V9fsString str; |
1172 | 8cf89e00 | Anthony Liguori | v9fs_string_init(&str); |
1173 | 8cf89e00 | Anthony Liguori | v9fs_string_copy(&str, dst); |
1174 | 8cf89e00 | Anthony Liguori | v9fs_string_sprintf(dst, "%s%s", src->data, str.data+len);
|
1175 | 8cf89e00 | Anthony Liguori | v9fs_string_free(&str); |
1176 | 8cf89e00 | Anthony Liguori | } |
1177 | 8cf89e00 | Anthony Liguori | |
1178 | 9f107513 | Anthony Liguori | static void v9fs_version(V9fsState *s, V9fsPDU *pdu) |
1179 | 9f107513 | Anthony Liguori | { |
1180 | 92c1ad03 | Anthony Liguori | V9fsString version; |
1181 | 92c1ad03 | Anthony Liguori | size_t offset = 7;
|
1182 | 92c1ad03 | Anthony Liguori | |
1183 | 5e94c103 | M. Mohan Kumar | pdu_unmarshal(pdu, offset, "ds", &s->msize, &version);
|
1184 | 92c1ad03 | Anthony Liguori | |
1185 | 84151514 | M. Mohan Kumar | if (!strcmp(version.data, "9P2000.u")) { |
1186 | 84151514 | M. Mohan Kumar | s->proto_version = V9FS_PROTO_2000U; |
1187 | 84151514 | M. Mohan Kumar | } else if (!strcmp(version.data, "9P2000.L")) { |
1188 | 84151514 | M. Mohan Kumar | s->proto_version = V9FS_PROTO_2000L; |
1189 | 84151514 | M. Mohan Kumar | } else {
|
1190 | 92c1ad03 | Anthony Liguori | v9fs_string_sprintf(&version, "unknown");
|
1191 | 9f107513 | Anthony Liguori | } |
1192 | 92c1ad03 | Anthony Liguori | |
1193 | 5e94c103 | M. Mohan Kumar | offset += pdu_marshal(pdu, offset, "ds", s->msize, &version);
|
1194 | 92c1ad03 | Anthony Liguori | complete_pdu(s, pdu, offset); |
1195 | 92c1ad03 | Anthony Liguori | |
1196 | 92c1ad03 | Anthony Liguori | v9fs_string_free(&version); |
1197 | 9f107513 | Anthony Liguori | } |
1198 | 9f107513 | Anthony Liguori | |
1199 | 9f107513 | Anthony Liguori | static void v9fs_attach(V9fsState *s, V9fsPDU *pdu) |
1200 | 9f107513 | Anthony Liguori | { |
1201 | 955efc47 | Anthony Liguori | int32_t fid, afid, n_uname; |
1202 | 955efc47 | Anthony Liguori | V9fsString uname, aname; |
1203 | 955efc47 | Anthony Liguori | V9fsFidState *fidp; |
1204 | 955efc47 | Anthony Liguori | V9fsQID qid; |
1205 | 955efc47 | Anthony Liguori | size_t offset = 7;
|
1206 | 955efc47 | Anthony Liguori | ssize_t err; |
1207 | 955efc47 | Anthony Liguori | |
1208 | 955efc47 | Anthony Liguori | pdu_unmarshal(pdu, offset, "ddssd", &fid, &afid, &uname, &aname, &n_uname);
|
1209 | 955efc47 | Anthony Liguori | |
1210 | 955efc47 | Anthony Liguori | fidp = alloc_fid(s, fid); |
1211 | 955efc47 | Anthony Liguori | if (fidp == NULL) { |
1212 | 955efc47 | Anthony Liguori | err = -EINVAL; |
1213 | 955efc47 | Anthony Liguori | goto out;
|
1214 | 9f107513 | Anthony Liguori | } |
1215 | 955efc47 | Anthony Liguori | |
1216 | 955efc47 | Anthony Liguori | fidp->uid = n_uname; |
1217 | 955efc47 | Anthony Liguori | |
1218 | 955efc47 | Anthony Liguori | v9fs_string_sprintf(&fidp->path, "%s", "/"); |
1219 | 955efc47 | Anthony Liguori | err = fid_to_qid(s, fidp, &qid); |
1220 | 955efc47 | Anthony Liguori | if (err) {
|
1221 | 955efc47 | Anthony Liguori | err = -EINVAL; |
1222 | 955efc47 | Anthony Liguori | free_fid(s, fid); |
1223 | 955efc47 | Anthony Liguori | goto out;
|
1224 | 955efc47 | Anthony Liguori | } |
1225 | 955efc47 | Anthony Liguori | |
1226 | 955efc47 | Anthony Liguori | offset += pdu_marshal(pdu, offset, "Q", &qid);
|
1227 | 955efc47 | Anthony Liguori | |
1228 | 955efc47 | Anthony Liguori | err = offset; |
1229 | 955efc47 | Anthony Liguori | out:
|
1230 | 955efc47 | Anthony Liguori | complete_pdu(s, pdu, err); |
1231 | 955efc47 | Anthony Liguori | v9fs_string_free(&uname); |
1232 | 955efc47 | Anthony Liguori | v9fs_string_free(&aname); |
1233 | 9f107513 | Anthony Liguori | } |
1234 | 9f107513 | Anthony Liguori | |
1235 | 4da7d3fa | Anthony Liguori | static void v9fs_stat_post_lstat(V9fsState *s, V9fsStatState *vs, int err) |
1236 | 4da7d3fa | Anthony Liguori | { |
1237 | 4da7d3fa | Anthony Liguori | if (err == -1) { |
1238 | 4da7d3fa | Anthony Liguori | err = -errno; |
1239 | 4da7d3fa | Anthony Liguori | goto out;
|
1240 | 4da7d3fa | Anthony Liguori | } |
1241 | 4da7d3fa | Anthony Liguori | |
1242 | 4da7d3fa | Anthony Liguori | err = stat_to_v9stat(s, &vs->fidp->path, &vs->stbuf, &vs->v9stat); |
1243 | 4da7d3fa | Anthony Liguori | if (err) {
|
1244 | 4da7d3fa | Anthony Liguori | goto out;
|
1245 | 4da7d3fa | Anthony Liguori | } |
1246 | 4da7d3fa | Anthony Liguori | vs->offset += pdu_marshal(vs->pdu, vs->offset, "wS", 0, &vs->v9stat); |
1247 | 4da7d3fa | Anthony Liguori | err = vs->offset; |
1248 | 4da7d3fa | Anthony Liguori | |
1249 | 4da7d3fa | Anthony Liguori | out:
|
1250 | 4da7d3fa | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
1251 | 4da7d3fa | Anthony Liguori | v9fs_stat_free(&vs->v9stat); |
1252 | 4da7d3fa | Anthony Liguori | qemu_free(vs); |
1253 | 4da7d3fa | Anthony Liguori | } |
1254 | 4da7d3fa | Anthony Liguori | |
1255 | 9f107513 | Anthony Liguori | static void v9fs_stat(V9fsState *s, V9fsPDU *pdu) |
1256 | 9f107513 | Anthony Liguori | { |
1257 | 4da7d3fa | Anthony Liguori | int32_t fid; |
1258 | 4da7d3fa | Anthony Liguori | V9fsStatState *vs; |
1259 | 4da7d3fa | Anthony Liguori | ssize_t err = 0;
|
1260 | 4da7d3fa | Anthony Liguori | |
1261 | 4da7d3fa | Anthony Liguori | vs = qemu_malloc(sizeof(*vs));
|
1262 | 4da7d3fa | Anthony Liguori | vs->pdu = pdu; |
1263 | 4da7d3fa | Anthony Liguori | vs->offset = 7;
|
1264 | 4da7d3fa | Anthony Liguori | |
1265 | 4da7d3fa | Anthony Liguori | memset(&vs->v9stat, 0, sizeof(vs->v9stat)); |
1266 | 4da7d3fa | Anthony Liguori | |
1267 | 4da7d3fa | Anthony Liguori | pdu_unmarshal(vs->pdu, vs->offset, "d", &fid);
|
1268 | 4da7d3fa | Anthony Liguori | |
1269 | 4da7d3fa | Anthony Liguori | vs->fidp = lookup_fid(s, fid); |
1270 | 4da7d3fa | Anthony Liguori | if (vs->fidp == NULL) { |
1271 | 4da7d3fa | Anthony Liguori | err = -ENOENT; |
1272 | 4da7d3fa | Anthony Liguori | goto out;
|
1273 | 9f107513 | Anthony Liguori | } |
1274 | 4da7d3fa | Anthony Liguori | |
1275 | 4da7d3fa | Anthony Liguori | err = v9fs_do_lstat(s, &vs->fidp->path, &vs->stbuf); |
1276 | 4da7d3fa | Anthony Liguori | v9fs_stat_post_lstat(s, vs, err); |
1277 | 4da7d3fa | Anthony Liguori | return;
|
1278 | 4da7d3fa | Anthony Liguori | |
1279 | 4da7d3fa | Anthony Liguori | out:
|
1280 | 4da7d3fa | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
1281 | 4da7d3fa | Anthony Liguori | v9fs_stat_free(&vs->v9stat); |
1282 | 4da7d3fa | Anthony Liguori | qemu_free(vs); |
1283 | 9f107513 | Anthony Liguori | } |
1284 | 9f107513 | Anthony Liguori | |
1285 | 00ede4c2 | Sripathi Kodi | static void v9fs_getattr_post_lstat(V9fsState *s, V9fsStatStateDotl *vs, |
1286 | 00ede4c2 | Sripathi Kodi | int err)
|
1287 | 00ede4c2 | Sripathi Kodi | { |
1288 | 00ede4c2 | Sripathi Kodi | if (err == -1) { |
1289 | 00ede4c2 | Sripathi Kodi | err = -errno; |
1290 | 00ede4c2 | Sripathi Kodi | goto out;
|
1291 | 00ede4c2 | Sripathi Kodi | } |
1292 | 00ede4c2 | Sripathi Kodi | |
1293 | 00ede4c2 | Sripathi Kodi | stat_to_v9stat_dotl(s, &vs->stbuf, &vs->v9stat_dotl); |
1294 | 00ede4c2 | Sripathi Kodi | vs->offset += pdu_marshal(vs->pdu, vs->offset, "A", &vs->v9stat_dotl);
|
1295 | 00ede4c2 | Sripathi Kodi | err = vs->offset; |
1296 | 00ede4c2 | Sripathi Kodi | |
1297 | 00ede4c2 | Sripathi Kodi | out:
|
1298 | 00ede4c2 | Sripathi Kodi | complete_pdu(s, vs->pdu, err); |
1299 | 00ede4c2 | Sripathi Kodi | qemu_free(vs); |
1300 | 00ede4c2 | Sripathi Kodi | } |
1301 | 00ede4c2 | Sripathi Kodi | |
1302 | 00ede4c2 | Sripathi Kodi | static void v9fs_getattr(V9fsState *s, V9fsPDU *pdu) |
1303 | 00ede4c2 | Sripathi Kodi | { |
1304 | 00ede4c2 | Sripathi Kodi | int32_t fid; |
1305 | 00ede4c2 | Sripathi Kodi | V9fsStatStateDotl *vs; |
1306 | 00ede4c2 | Sripathi Kodi | ssize_t err = 0;
|
1307 | 00ede4c2 | Sripathi Kodi | V9fsFidState *fidp; |
1308 | 00ede4c2 | Sripathi Kodi | uint64_t request_mask; |
1309 | 00ede4c2 | Sripathi Kodi | |
1310 | 00ede4c2 | Sripathi Kodi | vs = qemu_malloc(sizeof(*vs));
|
1311 | 00ede4c2 | Sripathi Kodi | vs->pdu = pdu; |
1312 | 00ede4c2 | Sripathi Kodi | vs->offset = 7;
|
1313 | 00ede4c2 | Sripathi Kodi | |
1314 | 00ede4c2 | Sripathi Kodi | memset(&vs->v9stat_dotl, 0, sizeof(vs->v9stat_dotl)); |
1315 | 00ede4c2 | Sripathi Kodi | |
1316 | 00ede4c2 | Sripathi Kodi | pdu_unmarshal(vs->pdu, vs->offset, "dq", &fid, &request_mask);
|
1317 | 00ede4c2 | Sripathi Kodi | |
1318 | 00ede4c2 | Sripathi Kodi | fidp = lookup_fid(s, fid); |
1319 | 00ede4c2 | Sripathi Kodi | if (fidp == NULL) { |
1320 | 00ede4c2 | Sripathi Kodi | err = -ENOENT; |
1321 | 00ede4c2 | Sripathi Kodi | goto out;
|
1322 | 00ede4c2 | Sripathi Kodi | } |
1323 | 00ede4c2 | Sripathi Kodi | |
1324 | 00ede4c2 | Sripathi Kodi | /* Currently we only support BASIC fields in stat, so there is no
|
1325 | 00ede4c2 | Sripathi Kodi | * need to look at request_mask.
|
1326 | 00ede4c2 | Sripathi Kodi | */
|
1327 | 00ede4c2 | Sripathi Kodi | err = v9fs_do_lstat(s, &fidp->path, &vs->stbuf); |
1328 | 00ede4c2 | Sripathi Kodi | v9fs_getattr_post_lstat(s, vs, err); |
1329 | 00ede4c2 | Sripathi Kodi | return;
|
1330 | 00ede4c2 | Sripathi Kodi | |
1331 | 00ede4c2 | Sripathi Kodi | out:
|
1332 | 00ede4c2 | Sripathi Kodi | complete_pdu(s, vs->pdu, err); |
1333 | 00ede4c2 | Sripathi Kodi | qemu_free(vs); |
1334 | 00ede4c2 | Sripathi Kodi | } |
1335 | 00ede4c2 | Sripathi Kodi | |
1336 | c79ce737 | Sripathi Kodi | /* From Linux kernel code */
|
1337 | c79ce737 | Sripathi Kodi | #define ATTR_MODE (1 << 0) |
1338 | c79ce737 | Sripathi Kodi | #define ATTR_UID (1 << 1) |
1339 | c79ce737 | Sripathi Kodi | #define ATTR_GID (1 << 2) |
1340 | c79ce737 | Sripathi Kodi | #define ATTR_SIZE (1 << 3) |
1341 | c79ce737 | Sripathi Kodi | #define ATTR_ATIME (1 << 4) |
1342 | c79ce737 | Sripathi Kodi | #define ATTR_MTIME (1 << 5) |
1343 | c79ce737 | Sripathi Kodi | #define ATTR_CTIME (1 << 6) |
1344 | c79ce737 | Sripathi Kodi | #define ATTR_MASK 127 |
1345 | c79ce737 | Sripathi Kodi | #define ATTR_ATIME_SET (1 << 7) |
1346 | c79ce737 | Sripathi Kodi | #define ATTR_MTIME_SET (1 << 8) |
1347 | c79ce737 | Sripathi Kodi | |
1348 | c79ce737 | Sripathi Kodi | static void v9fs_setattr_post_truncate(V9fsState *s, V9fsSetattrState *vs, |
1349 | c79ce737 | Sripathi Kodi | int err)
|
1350 | c79ce737 | Sripathi Kodi | { |
1351 | c79ce737 | Sripathi Kodi | if (err == -1) { |
1352 | c79ce737 | Sripathi Kodi | err = -errno; |
1353 | c79ce737 | Sripathi Kodi | goto out;
|
1354 | c79ce737 | Sripathi Kodi | } |
1355 | c79ce737 | Sripathi Kodi | err = vs->offset; |
1356 | c79ce737 | Sripathi Kodi | |
1357 | c79ce737 | Sripathi Kodi | out:
|
1358 | c79ce737 | Sripathi Kodi | complete_pdu(s, vs->pdu, err); |
1359 | c79ce737 | Sripathi Kodi | qemu_free(vs); |
1360 | c79ce737 | Sripathi Kodi | } |
1361 | c79ce737 | Sripathi Kodi | |
1362 | c79ce737 | Sripathi Kodi | static void v9fs_setattr_post_chown(V9fsState *s, V9fsSetattrState *vs, int err) |
1363 | c79ce737 | Sripathi Kodi | { |
1364 | c79ce737 | Sripathi Kodi | if (err == -1) { |
1365 | c79ce737 | Sripathi Kodi | err = -errno; |
1366 | c79ce737 | Sripathi Kodi | goto out;
|
1367 | c79ce737 | Sripathi Kodi | } |
1368 | c79ce737 | Sripathi Kodi | |
1369 | c79ce737 | Sripathi Kodi | if (vs->v9iattr.valid & (ATTR_SIZE)) {
|
1370 | c79ce737 | Sripathi Kodi | err = v9fs_do_truncate(s, &vs->fidp->path, vs->v9iattr.size); |
1371 | c79ce737 | Sripathi Kodi | } |
1372 | c79ce737 | Sripathi Kodi | v9fs_setattr_post_truncate(s, vs, err); |
1373 | c79ce737 | Sripathi Kodi | return;
|
1374 | c79ce737 | Sripathi Kodi | |
1375 | c79ce737 | Sripathi Kodi | out:
|
1376 | c79ce737 | Sripathi Kodi | complete_pdu(s, vs->pdu, err); |
1377 | c79ce737 | Sripathi Kodi | qemu_free(vs); |
1378 | c79ce737 | Sripathi Kodi | } |
1379 | c79ce737 | Sripathi Kodi | |
1380 | c79ce737 | Sripathi Kodi | static void v9fs_setattr_post_utimensat(V9fsState *s, V9fsSetattrState *vs, |
1381 | c79ce737 | Sripathi Kodi | int err)
|
1382 | c79ce737 | Sripathi Kodi | { |
1383 | c79ce737 | Sripathi Kodi | if (err == -1) { |
1384 | c79ce737 | Sripathi Kodi | err = -errno; |
1385 | c79ce737 | Sripathi Kodi | goto out;
|
1386 | c79ce737 | Sripathi Kodi | } |
1387 | c79ce737 | Sripathi Kodi | |
1388 | c79ce737 | Sripathi Kodi | /* If the only valid entry in iattr is ctime we can call
|
1389 | c79ce737 | Sripathi Kodi | * chown(-1,-1) to update the ctime of the file
|
1390 | c79ce737 | Sripathi Kodi | */
|
1391 | c79ce737 | Sripathi Kodi | if ((vs->v9iattr.valid & (ATTR_UID | ATTR_GID)) ||
|
1392 | c79ce737 | Sripathi Kodi | ((vs->v9iattr.valid & ATTR_CTIME) |
1393 | c79ce737 | Sripathi Kodi | && !((vs->v9iattr.valid & ATTR_MASK) & ~ATTR_CTIME))) { |
1394 | c79ce737 | Sripathi Kodi | if (!(vs->v9iattr.valid & ATTR_UID)) {
|
1395 | c79ce737 | Sripathi Kodi | vs->v9iattr.uid = -1;
|
1396 | c79ce737 | Sripathi Kodi | } |
1397 | c79ce737 | Sripathi Kodi | if (!(vs->v9iattr.valid & ATTR_GID)) {
|
1398 | c79ce737 | Sripathi Kodi | vs->v9iattr.gid = -1;
|
1399 | c79ce737 | Sripathi Kodi | } |
1400 | c79ce737 | Sripathi Kodi | err = v9fs_do_chown(s, &vs->fidp->path, vs->v9iattr.uid, |
1401 | c79ce737 | Sripathi Kodi | vs->v9iattr.gid); |
1402 | c79ce737 | Sripathi Kodi | } |
1403 | c79ce737 | Sripathi Kodi | v9fs_setattr_post_chown(s, vs, err); |
1404 | c79ce737 | Sripathi Kodi | return;
|
1405 | c79ce737 | Sripathi Kodi | |
1406 | c79ce737 | Sripathi Kodi | out:
|
1407 | c79ce737 | Sripathi Kodi | complete_pdu(s, vs->pdu, err); |
1408 | c79ce737 | Sripathi Kodi | qemu_free(vs); |
1409 | c79ce737 | Sripathi Kodi | } |
1410 | c79ce737 | Sripathi Kodi | |
1411 | c79ce737 | Sripathi Kodi | static void v9fs_setattr_post_chmod(V9fsState *s, V9fsSetattrState *vs, int err) |
1412 | c79ce737 | Sripathi Kodi | { |
1413 | c79ce737 | Sripathi Kodi | if (err == -1) { |
1414 | c79ce737 | Sripathi Kodi | err = -errno; |
1415 | c79ce737 | Sripathi Kodi | goto out;
|
1416 | c79ce737 | Sripathi Kodi | } |
1417 | c79ce737 | Sripathi Kodi | |
1418 | c79ce737 | Sripathi Kodi | if (vs->v9iattr.valid & (ATTR_ATIME | ATTR_MTIME)) {
|
1419 | c79ce737 | Sripathi Kodi | struct timespec times[2]; |
1420 | c79ce737 | Sripathi Kodi | if (vs->v9iattr.valid & ATTR_ATIME) {
|
1421 | c79ce737 | Sripathi Kodi | if (vs->v9iattr.valid & ATTR_ATIME_SET) {
|
1422 | c79ce737 | Sripathi Kodi | times[0].tv_sec = vs->v9iattr.atime_sec;
|
1423 | c79ce737 | Sripathi Kodi | times[0].tv_nsec = vs->v9iattr.atime_nsec;
|
1424 | c79ce737 | Sripathi Kodi | } else {
|
1425 | c79ce737 | Sripathi Kodi | times[0].tv_nsec = UTIME_NOW;
|
1426 | c79ce737 | Sripathi Kodi | } |
1427 | c79ce737 | Sripathi Kodi | } else {
|
1428 | c79ce737 | Sripathi Kodi | times[0].tv_nsec = UTIME_OMIT;
|
1429 | c79ce737 | Sripathi Kodi | } |
1430 | c79ce737 | Sripathi Kodi | |
1431 | c79ce737 | Sripathi Kodi | if (vs->v9iattr.valid & ATTR_MTIME) {
|
1432 | c79ce737 | Sripathi Kodi | if (vs->v9iattr.valid & ATTR_MTIME_SET) {
|
1433 | c79ce737 | Sripathi Kodi | times[1].tv_sec = vs->v9iattr.mtime_sec;
|
1434 | c79ce737 | Sripathi Kodi | times[1].tv_nsec = vs->v9iattr.mtime_nsec;
|
1435 | c79ce737 | Sripathi Kodi | } else {
|
1436 | c79ce737 | Sripathi Kodi | times[1].tv_nsec = UTIME_NOW;
|
1437 | c79ce737 | Sripathi Kodi | } |
1438 | c79ce737 | Sripathi Kodi | } else {
|
1439 | c79ce737 | Sripathi Kodi | times[1].tv_nsec = UTIME_OMIT;
|
1440 | c79ce737 | Sripathi Kodi | } |
1441 | c79ce737 | Sripathi Kodi | err = v9fs_do_utimensat(s, &vs->fidp->path, times); |
1442 | c79ce737 | Sripathi Kodi | } |
1443 | c79ce737 | Sripathi Kodi | v9fs_setattr_post_utimensat(s, vs, err); |
1444 | c79ce737 | Sripathi Kodi | return;
|
1445 | c79ce737 | Sripathi Kodi | |
1446 | c79ce737 | Sripathi Kodi | out:
|
1447 | c79ce737 | Sripathi Kodi | complete_pdu(s, vs->pdu, err); |
1448 | c79ce737 | Sripathi Kodi | qemu_free(vs); |
1449 | c79ce737 | Sripathi Kodi | } |
1450 | c79ce737 | Sripathi Kodi | |
1451 | c79ce737 | Sripathi Kodi | static void v9fs_setattr(V9fsState *s, V9fsPDU *pdu) |
1452 | c79ce737 | Sripathi Kodi | { |
1453 | c79ce737 | Sripathi Kodi | int32_t fid; |
1454 | c79ce737 | Sripathi Kodi | V9fsSetattrState *vs; |
1455 | c79ce737 | Sripathi Kodi | int err = 0; |
1456 | c79ce737 | Sripathi Kodi | |
1457 | c79ce737 | Sripathi Kodi | vs = qemu_malloc(sizeof(*vs));
|
1458 | c79ce737 | Sripathi Kodi | vs->pdu = pdu; |
1459 | c79ce737 | Sripathi Kodi | vs->offset = 7;
|
1460 | c79ce737 | Sripathi Kodi | |
1461 | c79ce737 | Sripathi Kodi | pdu_unmarshal(pdu, vs->offset, "dI", &fid, &vs->v9iattr);
|
1462 | c79ce737 | Sripathi Kodi | |
1463 | c79ce737 | Sripathi Kodi | vs->fidp = lookup_fid(s, fid); |
1464 | c79ce737 | Sripathi Kodi | if (vs->fidp == NULL) { |
1465 | c79ce737 | Sripathi Kodi | err = -EINVAL; |
1466 | c79ce737 | Sripathi Kodi | goto out;
|
1467 | c79ce737 | Sripathi Kodi | } |
1468 | c79ce737 | Sripathi Kodi | |
1469 | c79ce737 | Sripathi Kodi | if (vs->v9iattr.valid & ATTR_MODE) {
|
1470 | c79ce737 | Sripathi Kodi | err = v9fs_do_chmod(s, &vs->fidp->path, vs->v9iattr.mode); |
1471 | c79ce737 | Sripathi Kodi | } |
1472 | c79ce737 | Sripathi Kodi | |
1473 | c79ce737 | Sripathi Kodi | v9fs_setattr_post_chmod(s, vs, err); |
1474 | c79ce737 | Sripathi Kodi | return;
|
1475 | c79ce737 | Sripathi Kodi | |
1476 | c79ce737 | Sripathi Kodi | out:
|
1477 | c79ce737 | Sripathi Kodi | complete_pdu(s, vs->pdu, err); |
1478 | c79ce737 | Sripathi Kodi | qemu_free(vs); |
1479 | c79ce737 | Sripathi Kodi | } |
1480 | c79ce737 | Sripathi Kodi | |
1481 | ff5e54c9 | Anthony Liguori | static void v9fs_walk_complete(V9fsState *s, V9fsWalkState *vs, int err) |
1482 | ff5e54c9 | Anthony Liguori | { |
1483 | ff5e54c9 | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
1484 | ff5e54c9 | Anthony Liguori | |
1485 | ff5e54c9 | Anthony Liguori | if (vs->nwnames) {
|
1486 | ff5e54c9 | Anthony Liguori | for (vs->name_idx = 0; vs->name_idx < vs->nwnames; vs->name_idx++) { |
1487 | ff5e54c9 | Anthony Liguori | v9fs_string_free(&vs->wnames[vs->name_idx]); |
1488 | ff5e54c9 | Anthony Liguori | } |
1489 | ff5e54c9 | Anthony Liguori | |
1490 | ff5e54c9 | Anthony Liguori | qemu_free(vs->wnames); |
1491 | ff5e54c9 | Anthony Liguori | qemu_free(vs->qids); |
1492 | ff5e54c9 | Anthony Liguori | } |
1493 | ff5e54c9 | Anthony Liguori | } |
1494 | ff5e54c9 | Anthony Liguori | |
1495 | ff5e54c9 | Anthony Liguori | static void v9fs_walk_marshal(V9fsWalkState *vs) |
1496 | ff5e54c9 | Anthony Liguori | { |
1497 | ff5e54c9 | Anthony Liguori | int i;
|
1498 | ff5e54c9 | Anthony Liguori | vs->offset = 7;
|
1499 | ff5e54c9 | Anthony Liguori | vs->offset += pdu_marshal(vs->pdu, vs->offset, "w", vs->nwnames);
|
1500 | ff5e54c9 | Anthony Liguori | |
1501 | ff5e54c9 | Anthony Liguori | for (i = 0; i < vs->nwnames; i++) { |
1502 | ff5e54c9 | Anthony Liguori | vs->offset += pdu_marshal(vs->pdu, vs->offset, "Q", &vs->qids[i]);
|
1503 | ff5e54c9 | Anthony Liguori | } |
1504 | ff5e54c9 | Anthony Liguori | } |
1505 | ff5e54c9 | Anthony Liguori | |
1506 | ff5e54c9 | Anthony Liguori | static void v9fs_walk_post_newfid_lstat(V9fsState *s, V9fsWalkState *vs, |
1507 | ff5e54c9 | Anthony Liguori | int err)
|
1508 | ff5e54c9 | Anthony Liguori | { |
1509 | ff5e54c9 | Anthony Liguori | if (err == -1) { |
1510 | ff5e54c9 | Anthony Liguori | free_fid(s, vs->newfidp->fid); |
1511 | ff5e54c9 | Anthony Liguori | v9fs_string_free(&vs->path); |
1512 | ff5e54c9 | Anthony Liguori | err = -ENOENT; |
1513 | ff5e54c9 | Anthony Liguori | goto out;
|
1514 | ff5e54c9 | Anthony Liguori | } |
1515 | ff5e54c9 | Anthony Liguori | |
1516 | ff5e54c9 | Anthony Liguori | stat_to_qid(&vs->stbuf, &vs->qids[vs->name_idx]); |
1517 | ff5e54c9 | Anthony Liguori | |
1518 | ff5e54c9 | Anthony Liguori | vs->name_idx++; |
1519 | ff5e54c9 | Anthony Liguori | if (vs->name_idx < vs->nwnames) {
|
1520 | ff5e54c9 | Anthony Liguori | v9fs_string_sprintf(&vs->path, "%s/%s", vs->newfidp->path.data,
|
1521 | ff5e54c9 | Anthony Liguori | vs->wnames[vs->name_idx].data); |
1522 | ff5e54c9 | Anthony Liguori | v9fs_string_copy(&vs->newfidp->path, &vs->path); |
1523 | ff5e54c9 | Anthony Liguori | |
1524 | ff5e54c9 | Anthony Liguori | err = v9fs_do_lstat(s, &vs->newfidp->path, &vs->stbuf); |
1525 | ff5e54c9 | Anthony Liguori | v9fs_walk_post_newfid_lstat(s, vs, err); |
1526 | ff5e54c9 | Anthony Liguori | return;
|
1527 | ff5e54c9 | Anthony Liguori | } |
1528 | ff5e54c9 | Anthony Liguori | |
1529 | ff5e54c9 | Anthony Liguori | v9fs_string_free(&vs->path); |
1530 | ff5e54c9 | Anthony Liguori | v9fs_walk_marshal(vs); |
1531 | ff5e54c9 | Anthony Liguori | err = vs->offset; |
1532 | ff5e54c9 | Anthony Liguori | out:
|
1533 | ff5e54c9 | Anthony Liguori | v9fs_walk_complete(s, vs, err); |
1534 | ff5e54c9 | Anthony Liguori | } |
1535 | ff5e54c9 | Anthony Liguori | |
1536 | ff5e54c9 | Anthony Liguori | static void v9fs_walk_post_oldfid_lstat(V9fsState *s, V9fsWalkState *vs, |
1537 | ff5e54c9 | Anthony Liguori | int err)
|
1538 | ff5e54c9 | Anthony Liguori | { |
1539 | ff5e54c9 | Anthony Liguori | if (err == -1) { |
1540 | ff5e54c9 | Anthony Liguori | v9fs_string_free(&vs->path); |
1541 | ff5e54c9 | Anthony Liguori | err = -ENOENT; |
1542 | ff5e54c9 | Anthony Liguori | goto out;
|
1543 | ff5e54c9 | Anthony Liguori | } |
1544 | ff5e54c9 | Anthony Liguori | |
1545 | ff5e54c9 | Anthony Liguori | stat_to_qid(&vs->stbuf, &vs->qids[vs->name_idx]); |
1546 | ff5e54c9 | Anthony Liguori | vs->name_idx++; |
1547 | ff5e54c9 | Anthony Liguori | if (vs->name_idx < vs->nwnames) {
|
1548 | ff5e54c9 | Anthony Liguori | |
1549 | ff5e54c9 | Anthony Liguori | v9fs_string_sprintf(&vs->path, "%s/%s",
|
1550 | ff5e54c9 | Anthony Liguori | vs->fidp->path.data, vs->wnames[vs->name_idx].data); |
1551 | ff5e54c9 | Anthony Liguori | v9fs_string_copy(&vs->fidp->path, &vs->path); |
1552 | ff5e54c9 | Anthony Liguori | |
1553 | ff5e54c9 | Anthony Liguori | err = v9fs_do_lstat(s, &vs->fidp->path, &vs->stbuf); |
1554 | ff5e54c9 | Anthony Liguori | v9fs_walk_post_oldfid_lstat(s, vs, err); |
1555 | ff5e54c9 | Anthony Liguori | return;
|
1556 | ff5e54c9 | Anthony Liguori | } |
1557 | ff5e54c9 | Anthony Liguori | |
1558 | ff5e54c9 | Anthony Liguori | v9fs_string_free(&vs->path); |
1559 | ff5e54c9 | Anthony Liguori | v9fs_walk_marshal(vs); |
1560 | ff5e54c9 | Anthony Liguori | err = vs->offset; |
1561 | ff5e54c9 | Anthony Liguori | out:
|
1562 | ff5e54c9 | Anthony Liguori | v9fs_walk_complete(s, vs, err); |
1563 | ff5e54c9 | Anthony Liguori | } |
1564 | ff5e54c9 | Anthony Liguori | |
1565 | 9f107513 | Anthony Liguori | static void v9fs_walk(V9fsState *s, V9fsPDU *pdu) |
1566 | 9f107513 | Anthony Liguori | { |
1567 | ff5e54c9 | Anthony Liguori | int32_t fid, newfid; |
1568 | ff5e54c9 | Anthony Liguori | V9fsWalkState *vs; |
1569 | ff5e54c9 | Anthony Liguori | int err = 0; |
1570 | ff5e54c9 | Anthony Liguori | int i;
|
1571 | ff5e54c9 | Anthony Liguori | |
1572 | ff5e54c9 | Anthony Liguori | vs = qemu_malloc(sizeof(*vs));
|
1573 | ff5e54c9 | Anthony Liguori | vs->pdu = pdu; |
1574 | ff5e54c9 | Anthony Liguori | vs->wnames = NULL;
|
1575 | ff5e54c9 | Anthony Liguori | vs->qids = NULL;
|
1576 | ff5e54c9 | Anthony Liguori | vs->offset = 7;
|
1577 | ff5e54c9 | Anthony Liguori | |
1578 | ff5e54c9 | Anthony Liguori | vs->offset += pdu_unmarshal(vs->pdu, vs->offset, "ddw", &fid,
|
1579 | ff5e54c9 | Anthony Liguori | &newfid, &vs->nwnames); |
1580 | ff5e54c9 | Anthony Liguori | |
1581 | ff5e54c9 | Anthony Liguori | if (vs->nwnames) {
|
1582 | ff5e54c9 | Anthony Liguori | vs->wnames = qemu_mallocz(sizeof(vs->wnames[0]) * vs->nwnames); |
1583 | ff5e54c9 | Anthony Liguori | |
1584 | ff5e54c9 | Anthony Liguori | vs->qids = qemu_mallocz(sizeof(vs->qids[0]) * vs->nwnames); |
1585 | ff5e54c9 | Anthony Liguori | |
1586 | ff5e54c9 | Anthony Liguori | for (i = 0; i < vs->nwnames; i++) { |
1587 | ff5e54c9 | Anthony Liguori | vs->offset += pdu_unmarshal(vs->pdu, vs->offset, "s",
|
1588 | ff5e54c9 | Anthony Liguori | &vs->wnames[i]); |
1589 | ff5e54c9 | Anthony Liguori | } |
1590 | ff5e54c9 | Anthony Liguori | } |
1591 | ff5e54c9 | Anthony Liguori | |
1592 | ff5e54c9 | Anthony Liguori | vs->fidp = lookup_fid(s, fid); |
1593 | ff5e54c9 | Anthony Liguori | if (vs->fidp == NULL) { |
1594 | ff5e54c9 | Anthony Liguori | err = -ENOENT; |
1595 | ff5e54c9 | Anthony Liguori | goto out;
|
1596 | ff5e54c9 | Anthony Liguori | } |
1597 | ff5e54c9 | Anthony Liguori | |
1598 | ff5e54c9 | Anthony Liguori | /* FIXME: is this really valid? */
|
1599 | ff5e54c9 | Anthony Liguori | if (fid == newfid) {
|
1600 | ff5e54c9 | Anthony Liguori | |
1601 | d62dbb51 | Aneesh Kumar K.V | BUG_ON(vs->fidp->fid_type != P9_FID_NONE); |
1602 | ff5e54c9 | Anthony Liguori | v9fs_string_init(&vs->path); |
1603 | ff5e54c9 | Anthony Liguori | vs->name_idx = 0;
|
1604 | ff5e54c9 | Anthony Liguori | |
1605 | ff5e54c9 | Anthony Liguori | if (vs->name_idx < vs->nwnames) {
|
1606 | ff5e54c9 | Anthony Liguori | v9fs_string_sprintf(&vs->path, "%s/%s",
|
1607 | ff5e54c9 | Anthony Liguori | vs->fidp->path.data, vs->wnames[vs->name_idx].data); |
1608 | ff5e54c9 | Anthony Liguori | v9fs_string_copy(&vs->fidp->path, &vs->path); |
1609 | ff5e54c9 | Anthony Liguori | |
1610 | ff5e54c9 | Anthony Liguori | err = v9fs_do_lstat(s, &vs->fidp->path, &vs->stbuf); |
1611 | ff5e54c9 | Anthony Liguori | v9fs_walk_post_oldfid_lstat(s, vs, err); |
1612 | ff5e54c9 | Anthony Liguori | return;
|
1613 | ff5e54c9 | Anthony Liguori | } |
1614 | ff5e54c9 | Anthony Liguori | } else {
|
1615 | ff5e54c9 | Anthony Liguori | vs->newfidp = alloc_fid(s, newfid); |
1616 | ff5e54c9 | Anthony Liguori | if (vs->newfidp == NULL) { |
1617 | ff5e54c9 | Anthony Liguori | err = -EINVAL; |
1618 | ff5e54c9 | Anthony Liguori | goto out;
|
1619 | ff5e54c9 | Anthony Liguori | } |
1620 | ff5e54c9 | Anthony Liguori | |
1621 | ff5e54c9 | Anthony Liguori | vs->newfidp->uid = vs->fidp->uid; |
1622 | ff5e54c9 | Anthony Liguori | v9fs_string_init(&vs->path); |
1623 | ff5e54c9 | Anthony Liguori | vs->name_idx = 0;
|
1624 | ff5e54c9 | Anthony Liguori | v9fs_string_copy(&vs->newfidp->path, &vs->fidp->path); |
1625 | ff5e54c9 | Anthony Liguori | |
1626 | ff5e54c9 | Anthony Liguori | if (vs->name_idx < vs->nwnames) {
|
1627 | ff5e54c9 | Anthony Liguori | v9fs_string_sprintf(&vs->path, "%s/%s", vs->newfidp->path.data,
|
1628 | ff5e54c9 | Anthony Liguori | vs->wnames[vs->name_idx].data); |
1629 | ff5e54c9 | Anthony Liguori | v9fs_string_copy(&vs->newfidp->path, &vs->path); |
1630 | ff5e54c9 | Anthony Liguori | |
1631 | ff5e54c9 | Anthony Liguori | err = v9fs_do_lstat(s, &vs->newfidp->path, &vs->stbuf); |
1632 | ff5e54c9 | Anthony Liguori | v9fs_walk_post_newfid_lstat(s, vs, err); |
1633 | ff5e54c9 | Anthony Liguori | return;
|
1634 | ff5e54c9 | Anthony Liguori | } |
1635 | 9f107513 | Anthony Liguori | } |
1636 | ff5e54c9 | Anthony Liguori | |
1637 | ff5e54c9 | Anthony Liguori | v9fs_walk_marshal(vs); |
1638 | ff5e54c9 | Anthony Liguori | err = vs->offset; |
1639 | ff5e54c9 | Anthony Liguori | out:
|
1640 | ff5e54c9 | Anthony Liguori | v9fs_walk_complete(s, vs, err); |
1641 | 9f107513 | Anthony Liguori | } |
1642 | 9f107513 | Anthony Liguori | |
1643 | 5e94c103 | M. Mohan Kumar | static int32_t get_iounit(V9fsState *s, V9fsString *name)
|
1644 | 5e94c103 | M. Mohan Kumar | { |
1645 | 5e94c103 | M. Mohan Kumar | struct statfs stbuf;
|
1646 | 5e94c103 | M. Mohan Kumar | int32_t iounit = 0;
|
1647 | 5e94c103 | M. Mohan Kumar | |
1648 | 5e94c103 | M. Mohan Kumar | /*
|
1649 | 5e94c103 | M. Mohan Kumar | * iounit should be multiples of f_bsize (host filesystem block size
|
1650 | 5e94c103 | M. Mohan Kumar | * and as well as less than (client msize - P9_IOHDRSZ))
|
1651 | 5e94c103 | M. Mohan Kumar | */
|
1652 | 5e94c103 | M. Mohan Kumar | if (!v9fs_do_statfs(s, name, &stbuf)) {
|
1653 | 5e94c103 | M. Mohan Kumar | iounit = stbuf.f_bsize; |
1654 | 5e94c103 | M. Mohan Kumar | iounit *= (s->msize - P9_IOHDRSZ)/stbuf.f_bsize; |
1655 | 5e94c103 | M. Mohan Kumar | } |
1656 | 5e94c103 | M. Mohan Kumar | |
1657 | 5e94c103 | M. Mohan Kumar | if (!iounit) {
|
1658 | 5e94c103 | M. Mohan Kumar | iounit = s->msize - P9_IOHDRSZ; |
1659 | 5e94c103 | M. Mohan Kumar | } |
1660 | 5e94c103 | M. Mohan Kumar | return iounit;
|
1661 | 5e94c103 | M. Mohan Kumar | } |
1662 | 5e94c103 | M. Mohan Kumar | |
1663 | a6568fe2 | Anthony Liguori | static void v9fs_open_post_opendir(V9fsState *s, V9fsOpenState *vs, int err) |
1664 | a6568fe2 | Anthony Liguori | { |
1665 | d62dbb51 | Aneesh Kumar K.V | if (vs->fidp->fs.dir == NULL) { |
1666 | a6568fe2 | Anthony Liguori | err = -errno; |
1667 | a6568fe2 | Anthony Liguori | goto out;
|
1668 | a6568fe2 | Anthony Liguori | } |
1669 | d62dbb51 | Aneesh Kumar K.V | vs->fidp->fid_type = P9_FID_DIR; |
1670 | a6568fe2 | Anthony Liguori | vs->offset += pdu_marshal(vs->pdu, vs->offset, "Qd", &vs->qid, 0); |
1671 | a6568fe2 | Anthony Liguori | err = vs->offset; |
1672 | a6568fe2 | Anthony Liguori | out:
|
1673 | a6568fe2 | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
1674 | a6568fe2 | Anthony Liguori | qemu_free(vs); |
1675 | a6568fe2 | Anthony Liguori | |
1676 | a6568fe2 | Anthony Liguori | } |
1677 | a6568fe2 | Anthony Liguori | |
1678 | 5e94c103 | M. Mohan Kumar | static void v9fs_open_post_getiounit(V9fsState *s, V9fsOpenState *vs) |
1679 | 5e94c103 | M. Mohan Kumar | { |
1680 | 5e94c103 | M. Mohan Kumar | int err;
|
1681 | 5e94c103 | M. Mohan Kumar | vs->offset += pdu_marshal(vs->pdu, vs->offset, "Qd", &vs->qid, vs->iounit);
|
1682 | 5e94c103 | M. Mohan Kumar | err = vs->offset; |
1683 | 5e94c103 | M. Mohan Kumar | complete_pdu(s, vs->pdu, err); |
1684 | 5e94c103 | M. Mohan Kumar | qemu_free(vs); |
1685 | 5e94c103 | M. Mohan Kumar | } |
1686 | 5e94c103 | M. Mohan Kumar | |
1687 | a6568fe2 | Anthony Liguori | static void v9fs_open_post_open(V9fsState *s, V9fsOpenState *vs, int err) |
1688 | a6568fe2 | Anthony Liguori | { |
1689 | d62dbb51 | Aneesh Kumar K.V | if (vs->fidp->fs.fd == -1) { |
1690 | a6568fe2 | Anthony Liguori | err = -errno; |
1691 | a6568fe2 | Anthony Liguori | goto out;
|
1692 | a6568fe2 | Anthony Liguori | } |
1693 | d62dbb51 | Aneesh Kumar K.V | vs->fidp->fid_type = P9_FID_FILE; |
1694 | 5e94c103 | M. Mohan Kumar | vs->iounit = get_iounit(s, &vs->fidp->path); |
1695 | 5e94c103 | M. Mohan Kumar | v9fs_open_post_getiounit(s, vs); |
1696 | 5e94c103 | M. Mohan Kumar | return;
|
1697 | a6568fe2 | Anthony Liguori | out:
|
1698 | a6568fe2 | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
1699 | a6568fe2 | Anthony Liguori | qemu_free(vs); |
1700 | a6568fe2 | Anthony Liguori | } |
1701 | a6568fe2 | Anthony Liguori | |
1702 | a6568fe2 | Anthony Liguori | static void v9fs_open_post_lstat(V9fsState *s, V9fsOpenState *vs, int err) |
1703 | a6568fe2 | Anthony Liguori | { |
1704 | 771e9d4c | M. Mohan Kumar | int flags;
|
1705 | 771e9d4c | M. Mohan Kumar | |
1706 | a6568fe2 | Anthony Liguori | if (err) {
|
1707 | a6568fe2 | Anthony Liguori | err = -errno; |
1708 | a6568fe2 | Anthony Liguori | goto out;
|
1709 | a6568fe2 | Anthony Liguori | } |
1710 | a6568fe2 | Anthony Liguori | |
1711 | a6568fe2 | Anthony Liguori | stat_to_qid(&vs->stbuf, &vs->qid); |
1712 | a6568fe2 | Anthony Liguori | |
1713 | a6568fe2 | Anthony Liguori | if (S_ISDIR(vs->stbuf.st_mode)) {
|
1714 | d62dbb51 | Aneesh Kumar K.V | vs->fidp->fs.dir = v9fs_do_opendir(s, &vs->fidp->path); |
1715 | a6568fe2 | Anthony Liguori | v9fs_open_post_opendir(s, vs, err); |
1716 | a6568fe2 | Anthony Liguori | } else {
|
1717 | 771e9d4c | M. Mohan Kumar | if (s->proto_version == V9FS_PROTO_2000L) {
|
1718 | 771e9d4c | M. Mohan Kumar | flags = vs->mode; |
1719 | 630c2689 | Sripathi Kodi | flags &= ~(O_NOCTTY | O_ASYNC | O_CREAT); |
1720 | 0f8151cb | Venkateswararao Jujjuri (JV) | /* Ignore direct disk access hint until the server supports it. */
|
1721 | 0f8151cb | Venkateswararao Jujjuri (JV) | flags &= ~O_DIRECT; |
1722 | 771e9d4c | M. Mohan Kumar | } else {
|
1723 | 771e9d4c | M. Mohan Kumar | flags = omode_to_uflags(vs->mode); |
1724 | 771e9d4c | M. Mohan Kumar | } |
1725 | d62dbb51 | Aneesh Kumar K.V | vs->fidp->fs.fd = v9fs_do_open(s, &vs->fidp->path, flags); |
1726 | a6568fe2 | Anthony Liguori | v9fs_open_post_open(s, vs, err); |
1727 | a6568fe2 | Anthony Liguori | } |
1728 | a6568fe2 | Anthony Liguori | return;
|
1729 | a6568fe2 | Anthony Liguori | out:
|
1730 | a6568fe2 | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
1731 | a6568fe2 | Anthony Liguori | qemu_free(vs); |
1732 | 9f107513 | Anthony Liguori | } |
1733 | 9f107513 | Anthony Liguori | |
1734 | 9f107513 | Anthony Liguori | static void v9fs_open(V9fsState *s, V9fsPDU *pdu) |
1735 | a6568fe2 | Anthony Liguori | { |
1736 | a6568fe2 | Anthony Liguori | int32_t fid; |
1737 | a6568fe2 | Anthony Liguori | V9fsOpenState *vs; |
1738 | a6568fe2 | Anthony Liguori | ssize_t err = 0;
|
1739 | a6568fe2 | Anthony Liguori | |
1740 | a6568fe2 | Anthony Liguori | vs = qemu_malloc(sizeof(*vs));
|
1741 | a6568fe2 | Anthony Liguori | vs->pdu = pdu; |
1742 | a6568fe2 | Anthony Liguori | vs->offset = 7;
|
1743 | 771e9d4c | M. Mohan Kumar | vs->mode = 0;
|
1744 | a6568fe2 | Anthony Liguori | |
1745 | 771e9d4c | M. Mohan Kumar | if (s->proto_version == V9FS_PROTO_2000L) {
|
1746 | 771e9d4c | M. Mohan Kumar | pdu_unmarshal(vs->pdu, vs->offset, "dd", &fid, &vs->mode);
|
1747 | 771e9d4c | M. Mohan Kumar | } else {
|
1748 | 771e9d4c | M. Mohan Kumar | pdu_unmarshal(vs->pdu, vs->offset, "db", &fid, &vs->mode);
|
1749 | 771e9d4c | M. Mohan Kumar | } |
1750 | a6568fe2 | Anthony Liguori | |
1751 | a6568fe2 | Anthony Liguori | vs->fidp = lookup_fid(s, fid); |
1752 | a6568fe2 | Anthony Liguori | if (vs->fidp == NULL) { |
1753 | a6568fe2 | Anthony Liguori | err = -ENOENT; |
1754 | a6568fe2 | Anthony Liguori | goto out;
|
1755 | a6568fe2 | Anthony Liguori | } |
1756 | a6568fe2 | Anthony Liguori | |
1757 | d62dbb51 | Aneesh Kumar K.V | BUG_ON(vs->fidp->fid_type != P9_FID_NONE); |
1758 | a6568fe2 | Anthony Liguori | |
1759 | a6568fe2 | Anthony Liguori | err = v9fs_do_lstat(s, &vs->fidp->path, &vs->stbuf); |
1760 | a6568fe2 | Anthony Liguori | |
1761 | a6568fe2 | Anthony Liguori | v9fs_open_post_lstat(s, vs, err); |
1762 | a6568fe2 | Anthony Liguori | return;
|
1763 | a6568fe2 | Anthony Liguori | out:
|
1764 | a6568fe2 | Anthony Liguori | complete_pdu(s, pdu, err); |
1765 | a6568fe2 | Anthony Liguori | qemu_free(vs); |
1766 | a6568fe2 | Anthony Liguori | } |
1767 | a6568fe2 | Anthony Liguori | |
1768 | c1568af5 | Venkateswararao Jujjuri (JV) | static void v9fs_post_lcreate(V9fsState *s, V9fsLcreateState *vs, int err) |
1769 | c1568af5 | Venkateswararao Jujjuri (JV) | { |
1770 | c1568af5 | Venkateswararao Jujjuri (JV) | if (err == 0) { |
1771 | c1568af5 | Venkateswararao Jujjuri (JV) | v9fs_string_copy(&vs->fidp->path, &vs->fullname); |
1772 | c1568af5 | Venkateswararao Jujjuri (JV) | stat_to_qid(&vs->stbuf, &vs->qid); |
1773 | c1568af5 | Venkateswararao Jujjuri (JV) | vs->offset += pdu_marshal(vs->pdu, vs->offset, "Qd", &vs->qid,
|
1774 | c1568af5 | Venkateswararao Jujjuri (JV) | &vs->iounit); |
1775 | c1568af5 | Venkateswararao Jujjuri (JV) | err = vs->offset; |
1776 | c1568af5 | Venkateswararao Jujjuri (JV) | } else {
|
1777 | d62dbb51 | Aneesh Kumar K.V | vs->fidp->fid_type = P9_FID_NONE; |
1778 | c1568af5 | Venkateswararao Jujjuri (JV) | err = -errno; |
1779 | ab03b63d | Sripathi Kodi | if (vs->fidp->fs.fd > 0) { |
1780 | ab03b63d | Sripathi Kodi | close(vs->fidp->fs.fd); |
1781 | ab03b63d | Sripathi Kodi | } |
1782 | c1568af5 | Venkateswararao Jujjuri (JV) | } |
1783 | c1568af5 | Venkateswararao Jujjuri (JV) | |
1784 | c1568af5 | Venkateswararao Jujjuri (JV) | complete_pdu(s, vs->pdu, err); |
1785 | c1568af5 | Venkateswararao Jujjuri (JV) | v9fs_string_free(&vs->name); |
1786 | c1568af5 | Venkateswararao Jujjuri (JV) | v9fs_string_free(&vs->fullname); |
1787 | c1568af5 | Venkateswararao Jujjuri (JV) | qemu_free(vs); |
1788 | c1568af5 | Venkateswararao Jujjuri (JV) | } |
1789 | c1568af5 | Venkateswararao Jujjuri (JV) | |
1790 | c1568af5 | Venkateswararao Jujjuri (JV) | static void v9fs_lcreate_post_get_iounit(V9fsState *s, V9fsLcreateState *vs, |
1791 | c1568af5 | Venkateswararao Jujjuri (JV) | int err)
|
1792 | c1568af5 | Venkateswararao Jujjuri (JV) | { |
1793 | c1568af5 | Venkateswararao Jujjuri (JV) | if (err) {
|
1794 | c1568af5 | Venkateswararao Jujjuri (JV) | err = -errno; |
1795 | c1568af5 | Venkateswararao Jujjuri (JV) | goto out;
|
1796 | c1568af5 | Venkateswararao Jujjuri (JV) | } |
1797 | c1568af5 | Venkateswararao Jujjuri (JV) | err = v9fs_do_lstat(s, &vs->fullname, &vs->stbuf); |
1798 | c1568af5 | Venkateswararao Jujjuri (JV) | |
1799 | c1568af5 | Venkateswararao Jujjuri (JV) | out:
|
1800 | c1568af5 | Venkateswararao Jujjuri (JV) | v9fs_post_lcreate(s, vs, err); |
1801 | c1568af5 | Venkateswararao Jujjuri (JV) | } |
1802 | c1568af5 | Venkateswararao Jujjuri (JV) | |
1803 | c1568af5 | Venkateswararao Jujjuri (JV) | static void v9fs_lcreate_post_do_open2(V9fsState *s, V9fsLcreateState *vs, |
1804 | c1568af5 | Venkateswararao Jujjuri (JV) | int err)
|
1805 | c1568af5 | Venkateswararao Jujjuri (JV) | { |
1806 | d62dbb51 | Aneesh Kumar K.V | if (vs->fidp->fs.fd == -1) { |
1807 | c1568af5 | Venkateswararao Jujjuri (JV) | err = -errno; |
1808 | c1568af5 | Venkateswararao Jujjuri (JV) | goto out;
|
1809 | c1568af5 | Venkateswararao Jujjuri (JV) | } |
1810 | d62dbb51 | Aneesh Kumar K.V | vs->fidp->fid_type = P9_FID_FILE; |
1811 | c1568af5 | Venkateswararao Jujjuri (JV) | vs->iounit = get_iounit(s, &vs->fullname); |
1812 | c1568af5 | Venkateswararao Jujjuri (JV) | v9fs_lcreate_post_get_iounit(s, vs, err); |
1813 | c1568af5 | Venkateswararao Jujjuri (JV) | return;
|
1814 | c1568af5 | Venkateswararao Jujjuri (JV) | |
1815 | c1568af5 | Venkateswararao Jujjuri (JV) | out:
|
1816 | c1568af5 | Venkateswararao Jujjuri (JV) | v9fs_post_lcreate(s, vs, err); |
1817 | c1568af5 | Venkateswararao Jujjuri (JV) | } |
1818 | c1568af5 | Venkateswararao Jujjuri (JV) | |
1819 | c1568af5 | Venkateswararao Jujjuri (JV) | static void v9fs_lcreate(V9fsState *s, V9fsPDU *pdu) |
1820 | c1568af5 | Venkateswararao Jujjuri (JV) | { |
1821 | c1568af5 | Venkateswararao Jujjuri (JV) | int32_t dfid, flags, mode; |
1822 | c1568af5 | Venkateswararao Jujjuri (JV) | gid_t gid; |
1823 | c1568af5 | Venkateswararao Jujjuri (JV) | V9fsLcreateState *vs; |
1824 | c1568af5 | Venkateswararao Jujjuri (JV) | ssize_t err = 0;
|
1825 | c1568af5 | Venkateswararao Jujjuri (JV) | |
1826 | c1568af5 | Venkateswararao Jujjuri (JV) | vs = qemu_malloc(sizeof(*vs));
|
1827 | c1568af5 | Venkateswararao Jujjuri (JV) | vs->pdu = pdu; |
1828 | c1568af5 | Venkateswararao Jujjuri (JV) | vs->offset = 7;
|
1829 | c1568af5 | Venkateswararao Jujjuri (JV) | |
1830 | c1568af5 | Venkateswararao Jujjuri (JV) | v9fs_string_init(&vs->fullname); |
1831 | c1568af5 | Venkateswararao Jujjuri (JV) | |
1832 | c1568af5 | Venkateswararao Jujjuri (JV) | pdu_unmarshal(vs->pdu, vs->offset, "dsddd", &dfid, &vs->name, &flags,
|
1833 | c1568af5 | Venkateswararao Jujjuri (JV) | &mode, &gid); |
1834 | c1568af5 | Venkateswararao Jujjuri (JV) | |
1835 | c1568af5 | Venkateswararao Jujjuri (JV) | vs->fidp = lookup_fid(s, dfid); |
1836 | c1568af5 | Venkateswararao Jujjuri (JV) | if (vs->fidp == NULL) { |
1837 | c1568af5 | Venkateswararao Jujjuri (JV) | err = -ENOENT; |
1838 | c1568af5 | Venkateswararao Jujjuri (JV) | goto out;
|
1839 | c1568af5 | Venkateswararao Jujjuri (JV) | } |
1840 | c1568af5 | Venkateswararao Jujjuri (JV) | |
1841 | c1568af5 | Venkateswararao Jujjuri (JV) | v9fs_string_sprintf(&vs->fullname, "%s/%s", vs->fidp->path.data,
|
1842 | c1568af5 | Venkateswararao Jujjuri (JV) | vs->name.data); |
1843 | c1568af5 | Venkateswararao Jujjuri (JV) | |
1844 | 0f8151cb | Venkateswararao Jujjuri (JV) | /* Ignore direct disk access hint until the server supports it. */
|
1845 | 0f8151cb | Venkateswararao Jujjuri (JV) | flags &= ~O_DIRECT; |
1846 | 0f8151cb | Venkateswararao Jujjuri (JV) | |
1847 | d62dbb51 | Aneesh Kumar K.V | vs->fidp->fs.fd = v9fs_do_open2(s, vs->fullname.data, vs->fidp->uid, |
1848 | c1568af5 | Venkateswararao Jujjuri (JV) | gid, flags, mode); |
1849 | c1568af5 | Venkateswararao Jujjuri (JV) | v9fs_lcreate_post_do_open2(s, vs, err); |
1850 | c1568af5 | Venkateswararao Jujjuri (JV) | return;
|
1851 | c1568af5 | Venkateswararao Jujjuri (JV) | |
1852 | c1568af5 | Venkateswararao Jujjuri (JV) | out:
|
1853 | c1568af5 | Venkateswararao Jujjuri (JV) | complete_pdu(s, vs->pdu, err); |
1854 | c1568af5 | Venkateswararao Jujjuri (JV) | v9fs_string_free(&vs->name); |
1855 | c1568af5 | Venkateswararao Jujjuri (JV) | qemu_free(vs); |
1856 | c1568af5 | Venkateswararao Jujjuri (JV) | } |
1857 | c1568af5 | Venkateswararao Jujjuri (JV) | |
1858 | b41e95d3 | Venkateswararao Jujjuri (JV) | static void v9fs_post_do_fsync(V9fsState *s, V9fsPDU *pdu, int err) |
1859 | b41e95d3 | Venkateswararao Jujjuri (JV) | { |
1860 | b41e95d3 | Venkateswararao Jujjuri (JV) | if (err == -1) { |
1861 | b41e95d3 | Venkateswararao Jujjuri (JV) | err = -errno; |
1862 | b41e95d3 | Venkateswararao Jujjuri (JV) | } |
1863 | b41e95d3 | Venkateswararao Jujjuri (JV) | complete_pdu(s, pdu, err); |
1864 | b41e95d3 | Venkateswararao Jujjuri (JV) | } |
1865 | b41e95d3 | Venkateswararao Jujjuri (JV) | |
1866 | b41e95d3 | Venkateswararao Jujjuri (JV) | static void v9fs_fsync(V9fsState *s, V9fsPDU *pdu) |
1867 | b41e95d3 | Venkateswararao Jujjuri (JV) | { |
1868 | b41e95d3 | Venkateswararao Jujjuri (JV) | int32_t fid; |
1869 | b41e95d3 | Venkateswararao Jujjuri (JV) | size_t offset = 7;
|
1870 | b41e95d3 | Venkateswararao Jujjuri (JV) | V9fsFidState *fidp; |
1871 | 49594973 | Venkateswararao Jujjuri (JV) | int datasync;
|
1872 | b41e95d3 | Venkateswararao Jujjuri (JV) | int err;
|
1873 | b41e95d3 | Venkateswararao Jujjuri (JV) | |
1874 | 49594973 | Venkateswararao Jujjuri (JV) | pdu_unmarshal(pdu, offset, "dd", &fid, &datasync);
|
1875 | b41e95d3 | Venkateswararao Jujjuri (JV) | fidp = lookup_fid(s, fid); |
1876 | b41e95d3 | Venkateswararao Jujjuri (JV) | if (fidp == NULL) { |
1877 | b41e95d3 | Venkateswararao Jujjuri (JV) | err = -ENOENT; |
1878 | b41e95d3 | Venkateswararao Jujjuri (JV) | v9fs_post_do_fsync(s, pdu, err); |
1879 | b41e95d3 | Venkateswararao Jujjuri (JV) | return;
|
1880 | b41e95d3 | Venkateswararao Jujjuri (JV) | } |
1881 | 49594973 | Venkateswararao Jujjuri (JV) | err = v9fs_do_fsync(s, fidp->fs.fd, datasync); |
1882 | b41e95d3 | Venkateswararao Jujjuri (JV) | v9fs_post_do_fsync(s, pdu, err); |
1883 | b41e95d3 | Venkateswararao Jujjuri (JV) | } |
1884 | b41e95d3 | Venkateswararao Jujjuri (JV) | |
1885 | a6568fe2 | Anthony Liguori | static void v9fs_clunk(V9fsState *s, V9fsPDU *pdu) |
1886 | a6568fe2 | Anthony Liguori | { |
1887 | bbd5697b | Anthony Liguori | int32_t fid; |
1888 | bbd5697b | Anthony Liguori | size_t offset = 7;
|
1889 | bbd5697b | Anthony Liguori | int err;
|
1890 | bbd5697b | Anthony Liguori | |
1891 | bbd5697b | Anthony Liguori | pdu_unmarshal(pdu, offset, "d", &fid);
|
1892 | bbd5697b | Anthony Liguori | |
1893 | bbd5697b | Anthony Liguori | err = free_fid(s, fid); |
1894 | bbd5697b | Anthony Liguori | if (err < 0) { |
1895 | bbd5697b | Anthony Liguori | goto out;
|
1896 | a6568fe2 | Anthony Liguori | } |
1897 | bbd5697b | Anthony Liguori | |
1898 | bbd5697b | Anthony Liguori | offset = 7;
|
1899 | bbd5697b | Anthony Liguori | err = offset; |
1900 | bbd5697b | Anthony Liguori | out:
|
1901 | bbd5697b | Anthony Liguori | complete_pdu(s, pdu, err); |
1902 | 9f107513 | Anthony Liguori | } |
1903 | 9f107513 | Anthony Liguori | |
1904 | a9231555 | Anthony Liguori | static void v9fs_read_post_readdir(V9fsState *, V9fsReadState *, ssize_t); |
1905 | a9231555 | Anthony Liguori | |
1906 | a9231555 | Anthony Liguori | static void v9fs_read_post_seekdir(V9fsState *s, V9fsReadState *vs, ssize_t err) |
1907 | a9231555 | Anthony Liguori | { |
1908 | a9231555 | Anthony Liguori | if (err) {
|
1909 | a9231555 | Anthony Liguori | goto out;
|
1910 | a9231555 | Anthony Liguori | } |
1911 | a9231555 | Anthony Liguori | v9fs_stat_free(&vs->v9stat); |
1912 | a9231555 | Anthony Liguori | v9fs_string_free(&vs->name); |
1913 | a9231555 | Anthony Liguori | vs->offset += pdu_marshal(vs->pdu, vs->offset, "d", vs->count);
|
1914 | a9231555 | Anthony Liguori | vs->offset += vs->count; |
1915 | a9231555 | Anthony Liguori | err = vs->offset; |
1916 | a9231555 | Anthony Liguori | out:
|
1917 | a9231555 | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
1918 | a9231555 | Anthony Liguori | qemu_free(vs); |
1919 | a9231555 | Anthony Liguori | return;
|
1920 | a9231555 | Anthony Liguori | } |
1921 | a9231555 | Anthony Liguori | |
1922 | a9231555 | Anthony Liguori | static void v9fs_read_post_dir_lstat(V9fsState *s, V9fsReadState *vs, |
1923 | a9231555 | Anthony Liguori | ssize_t err) |
1924 | a9231555 | Anthony Liguori | { |
1925 | a9231555 | Anthony Liguori | if (err) {
|
1926 | a9231555 | Anthony Liguori | err = -errno; |
1927 | a9231555 | Anthony Liguori | goto out;
|
1928 | a9231555 | Anthony Liguori | } |
1929 | a9231555 | Anthony Liguori | err = stat_to_v9stat(s, &vs->name, &vs->stbuf, &vs->v9stat); |
1930 | a9231555 | Anthony Liguori | if (err) {
|
1931 | a9231555 | Anthony Liguori | goto out;
|
1932 | a9231555 | Anthony Liguori | } |
1933 | a9231555 | Anthony Liguori | |
1934 | a9231555 | Anthony Liguori | vs->len = pdu_marshal(vs->pdu, vs->offset + 4 + vs->count, "S", |
1935 | a9231555 | Anthony Liguori | &vs->v9stat); |
1936 | a9231555 | Anthony Liguori | if ((vs->len != (vs->v9stat.size + 2)) || |
1937 | a9231555 | Anthony Liguori | ((vs->count + vs->len) > vs->max_count)) { |
1938 | d62dbb51 | Aneesh Kumar K.V | v9fs_do_seekdir(s, vs->fidp->fs.dir, vs->dir_pos); |
1939 | a9231555 | Anthony Liguori | v9fs_read_post_seekdir(s, vs, err); |
1940 | a9231555 | Anthony Liguori | return;
|
1941 | a9231555 | Anthony Liguori | } |
1942 | a9231555 | Anthony Liguori | vs->count += vs->len; |
1943 | a9231555 | Anthony Liguori | v9fs_stat_free(&vs->v9stat); |
1944 | a9231555 | Anthony Liguori | v9fs_string_free(&vs->name); |
1945 | a9231555 | Anthony Liguori | vs->dir_pos = vs->dent->d_off; |
1946 | d62dbb51 | Aneesh Kumar K.V | vs->dent = v9fs_do_readdir(s, vs->fidp->fs.dir); |
1947 | a9231555 | Anthony Liguori | v9fs_read_post_readdir(s, vs, err); |
1948 | a9231555 | Anthony Liguori | return;
|
1949 | a9231555 | Anthony Liguori | out:
|
1950 | d62dbb51 | Aneesh Kumar K.V | v9fs_do_seekdir(s, vs->fidp->fs.dir, vs->dir_pos); |
1951 | a9231555 | Anthony Liguori | v9fs_read_post_seekdir(s, vs, err); |
1952 | a9231555 | Anthony Liguori | return;
|
1953 | a9231555 | Anthony Liguori | |
1954 | a9231555 | Anthony Liguori | } |
1955 | a9231555 | Anthony Liguori | |
1956 | a9231555 | Anthony Liguori | static void v9fs_read_post_readdir(V9fsState *s, V9fsReadState *vs, ssize_t err) |
1957 | a9231555 | Anthony Liguori | { |
1958 | a9231555 | Anthony Liguori | if (vs->dent) {
|
1959 | a9231555 | Anthony Liguori | memset(&vs->v9stat, 0, sizeof(vs->v9stat)); |
1960 | a9231555 | Anthony Liguori | v9fs_string_init(&vs->name); |
1961 | a9231555 | Anthony Liguori | v9fs_string_sprintf(&vs->name, "%s/%s", vs->fidp->path.data,
|
1962 | a9231555 | Anthony Liguori | vs->dent->d_name); |
1963 | a9231555 | Anthony Liguori | err = v9fs_do_lstat(s, &vs->name, &vs->stbuf); |
1964 | a9231555 | Anthony Liguori | v9fs_read_post_dir_lstat(s, vs, err); |
1965 | a9231555 | Anthony Liguori | return;
|
1966 | a9231555 | Anthony Liguori | } |
1967 | a9231555 | Anthony Liguori | |
1968 | a9231555 | Anthony Liguori | vs->offset += pdu_marshal(vs->pdu, vs->offset, "d", vs->count);
|
1969 | a9231555 | Anthony Liguori | vs->offset += vs->count; |
1970 | a9231555 | Anthony Liguori | err = vs->offset; |
1971 | a9231555 | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
1972 | a9231555 | Anthony Liguori | qemu_free(vs); |
1973 | a9231555 | Anthony Liguori | return;
|
1974 | a9231555 | Anthony Liguori | } |
1975 | a9231555 | Anthony Liguori | |
1976 | a9231555 | Anthony Liguori | static void v9fs_read_post_telldir(V9fsState *s, V9fsReadState *vs, ssize_t err) |
1977 | a9231555 | Anthony Liguori | { |
1978 | d62dbb51 | Aneesh Kumar K.V | vs->dent = v9fs_do_readdir(s, vs->fidp->fs.dir); |
1979 | a9231555 | Anthony Liguori | v9fs_read_post_readdir(s, vs, err); |
1980 | a9231555 | Anthony Liguori | return;
|
1981 | a9231555 | Anthony Liguori | } |
1982 | a9231555 | Anthony Liguori | |
1983 | a9231555 | Anthony Liguori | static void v9fs_read_post_rewinddir(V9fsState *s, V9fsReadState *vs, |
1984 | a9231555 | Anthony Liguori | ssize_t err) |
1985 | a9231555 | Anthony Liguori | { |
1986 | d62dbb51 | Aneesh Kumar K.V | vs->dir_pos = v9fs_do_telldir(s, vs->fidp->fs.dir); |
1987 | a9231555 | Anthony Liguori | v9fs_read_post_telldir(s, vs, err); |
1988 | a9231555 | Anthony Liguori | return;
|
1989 | a9231555 | Anthony Liguori | } |
1990 | a9231555 | Anthony Liguori | |
1991 | 56d15a53 | Sanchit Garg | static void v9fs_read_post_preadv(V9fsState *s, V9fsReadState *vs, ssize_t err) |
1992 | a9231555 | Anthony Liguori | { |
1993 | a9231555 | Anthony Liguori | if (err < 0) { |
1994 | a9231555 | Anthony Liguori | /* IO error return the error */
|
1995 | a9231555 | Anthony Liguori | err = -errno; |
1996 | a9231555 | Anthony Liguori | goto out;
|
1997 | a9231555 | Anthony Liguori | } |
1998 | a9231555 | Anthony Liguori | vs->total += vs->len; |
1999 | a9231555 | Anthony Liguori | vs->sg = adjust_sg(vs->sg, vs->len, &vs->cnt); |
2000 | a9231555 | Anthony Liguori | if (vs->total < vs->count && vs->len > 0) { |
2001 | a9231555 | Anthony Liguori | do {
|
2002 | a9231555 | Anthony Liguori | if (0) { |
2003 | a9231555 | Anthony Liguori | print_sg(vs->sg, vs->cnt); |
2004 | a9231555 | Anthony Liguori | } |
2005 | 56d15a53 | Sanchit Garg | vs->len = v9fs_do_preadv(s, vs->fidp->fs.fd, vs->sg, vs->cnt, |
2006 | 56d15a53 | Sanchit Garg | vs->off); |
2007 | 56d15a53 | Sanchit Garg | if (vs->len > 0) { |
2008 | 56d15a53 | Sanchit Garg | vs->off += vs->len; |
2009 | 56d15a53 | Sanchit Garg | } |
2010 | a9231555 | Anthony Liguori | } while (vs->len == -1 && errno == EINTR); |
2011 | a9231555 | Anthony Liguori | if (vs->len == -1) { |
2012 | a9231555 | Anthony Liguori | err = -errno; |
2013 | a9231555 | Anthony Liguori | } |
2014 | 56d15a53 | Sanchit Garg | v9fs_read_post_preadv(s, vs, err); |
2015 | a9231555 | Anthony Liguori | return;
|
2016 | a9231555 | Anthony Liguori | } |
2017 | a9231555 | Anthony Liguori | vs->offset += pdu_marshal(vs->pdu, vs->offset, "d", vs->total);
|
2018 | a9231555 | Anthony Liguori | vs->offset += vs->count; |
2019 | a9231555 | Anthony Liguori | err = vs->offset; |
2020 | a9231555 | Anthony Liguori | |
2021 | a9231555 | Anthony Liguori | out:
|
2022 | a9231555 | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
2023 | a9231555 | Anthony Liguori | qemu_free(vs); |
2024 | a9231555 | Anthony Liguori | } |
2025 | a9231555 | Anthony Liguori | |
2026 | fa32ef88 | Aneesh Kumar K.V | static void v9fs_xattr_read(V9fsState *s, V9fsReadState *vs) |
2027 | fa32ef88 | Aneesh Kumar K.V | { |
2028 | fa32ef88 | Aneesh Kumar K.V | ssize_t err = 0;
|
2029 | fa32ef88 | Aneesh Kumar K.V | int read_count;
|
2030 | fa32ef88 | Aneesh Kumar K.V | int64_t xattr_len; |
2031 | fa32ef88 | Aneesh Kumar K.V | |
2032 | fa32ef88 | Aneesh Kumar K.V | xattr_len = vs->fidp->fs.xattr.len; |
2033 | fa32ef88 | Aneesh Kumar K.V | read_count = xattr_len - vs->off; |
2034 | fa32ef88 | Aneesh Kumar K.V | if (read_count > vs->count) {
|
2035 | fa32ef88 | Aneesh Kumar K.V | read_count = vs->count; |
2036 | fa32ef88 | Aneesh Kumar K.V | } else if (read_count < 0) { |
2037 | fa32ef88 | Aneesh Kumar K.V | /*
|
2038 | fa32ef88 | Aneesh Kumar K.V | * read beyond XATTR value
|
2039 | fa32ef88 | Aneesh Kumar K.V | */
|
2040 | fa32ef88 | Aneesh Kumar K.V | read_count = 0;
|
2041 | fa32ef88 | Aneesh Kumar K.V | } |
2042 | fa32ef88 | Aneesh Kumar K.V | vs->offset += pdu_marshal(vs->pdu, vs->offset, "d", read_count);
|
2043 | fa32ef88 | Aneesh Kumar K.V | vs->offset += pdu_pack(vs->pdu, vs->offset, |
2044 | fa32ef88 | Aneesh Kumar K.V | ((char *)vs->fidp->fs.xattr.value) + vs->off,
|
2045 | fa32ef88 | Aneesh Kumar K.V | read_count); |
2046 | fa32ef88 | Aneesh Kumar K.V | err = vs->offset; |
2047 | fa32ef88 | Aneesh Kumar K.V | complete_pdu(s, vs->pdu, err); |
2048 | fa32ef88 | Aneesh Kumar K.V | qemu_free(vs); |
2049 | fa32ef88 | Aneesh Kumar K.V | } |
2050 | fa32ef88 | Aneesh Kumar K.V | |
2051 | 9f107513 | Anthony Liguori | static void v9fs_read(V9fsState *s, V9fsPDU *pdu) |
2052 | 9f107513 | Anthony Liguori | { |
2053 | a9231555 | Anthony Liguori | int32_t fid; |
2054 | a9231555 | Anthony Liguori | V9fsReadState *vs; |
2055 | a9231555 | Anthony Liguori | ssize_t err = 0;
|
2056 | a9231555 | Anthony Liguori | |
2057 | a9231555 | Anthony Liguori | vs = qemu_malloc(sizeof(*vs));
|
2058 | a9231555 | Anthony Liguori | vs->pdu = pdu; |
2059 | a9231555 | Anthony Liguori | vs->offset = 7;
|
2060 | a9231555 | Anthony Liguori | vs->total = 0;
|
2061 | a9231555 | Anthony Liguori | vs->len = 0;
|
2062 | a9231555 | Anthony Liguori | vs->count = 0;
|
2063 | a9231555 | Anthony Liguori | |
2064 | a9231555 | Anthony Liguori | pdu_unmarshal(vs->pdu, vs->offset, "dqd", &fid, &vs->off, &vs->count);
|
2065 | a9231555 | Anthony Liguori | |
2066 | a9231555 | Anthony Liguori | vs->fidp = lookup_fid(s, fid); |
2067 | a9231555 | Anthony Liguori | if (vs->fidp == NULL) { |
2068 | a9231555 | Anthony Liguori | err = -EINVAL; |
2069 | a9231555 | Anthony Liguori | goto out;
|
2070 | a9231555 | Anthony Liguori | } |
2071 | a9231555 | Anthony Liguori | |
2072 | fa32ef88 | Aneesh Kumar K.V | if (vs->fidp->fid_type == P9_FID_DIR) {
|
2073 | a9231555 | Anthony Liguori | vs->max_count = vs->count; |
2074 | a9231555 | Anthony Liguori | vs->count = 0;
|
2075 | a9231555 | Anthony Liguori | if (vs->off == 0) { |
2076 | d62dbb51 | Aneesh Kumar K.V | v9fs_do_rewinddir(s, vs->fidp->fs.dir); |
2077 | a9231555 | Anthony Liguori | } |
2078 | a9231555 | Anthony Liguori | v9fs_read_post_rewinddir(s, vs, err); |
2079 | a9231555 | Anthony Liguori | return;
|
2080 | fa32ef88 | Aneesh Kumar K.V | } else if (vs->fidp->fid_type == P9_FID_FILE) { |
2081 | a9231555 | Anthony Liguori | vs->sg = vs->iov; |
2082 | a9231555 | Anthony Liguori | pdu_marshal(vs->pdu, vs->offset + 4, "v", vs->sg, &vs->cnt); |
2083 | 56d15a53 | Sanchit Garg | vs->sg = cap_sg(vs->sg, vs->count, &vs->cnt); |
2084 | 56d15a53 | Sanchit Garg | if (vs->total <= vs->count) {
|
2085 | 56d15a53 | Sanchit Garg | vs->len = v9fs_do_preadv(s, vs->fidp->fs.fd, vs->sg, vs->cnt, |
2086 | 56d15a53 | Sanchit Garg | vs->off); |
2087 | 56d15a53 | Sanchit Garg | if (vs->len > 0) { |
2088 | 56d15a53 | Sanchit Garg | vs->off += vs->len; |
2089 | 56d15a53 | Sanchit Garg | } |
2090 | 56d15a53 | Sanchit Garg | err = vs->len; |
2091 | 56d15a53 | Sanchit Garg | v9fs_read_post_preadv(s, vs, err); |
2092 | 56d15a53 | Sanchit Garg | } |
2093 | a9231555 | Anthony Liguori | return;
|
2094 | fa32ef88 | Aneesh Kumar K.V | } else if (vs->fidp->fid_type == P9_FID_XATTR) { |
2095 | fa32ef88 | Aneesh Kumar K.V | v9fs_xattr_read(s, vs); |
2096 | fa32ef88 | Aneesh Kumar K.V | return;
|
2097 | a9231555 | Anthony Liguori | } else {
|
2098 | a9231555 | Anthony Liguori | err = -EINVAL; |
2099 | 9f107513 | Anthony Liguori | } |
2100 | a9231555 | Anthony Liguori | out:
|
2101 | a9231555 | Anthony Liguori | complete_pdu(s, pdu, err); |
2102 | a9231555 | Anthony Liguori | qemu_free(vs); |
2103 | 9f107513 | Anthony Liguori | } |
2104 | 9f107513 | Anthony Liguori | |
2105 | c18e2f94 | Sripathi Kodi | typedef struct V9fsReadDirState { |
2106 | c18e2f94 | Sripathi Kodi | V9fsPDU *pdu; |
2107 | c18e2f94 | Sripathi Kodi | V9fsFidState *fidp; |
2108 | c18e2f94 | Sripathi Kodi | V9fsQID qid; |
2109 | c18e2f94 | Sripathi Kodi | off_t saved_dir_pos; |
2110 | c18e2f94 | Sripathi Kodi | struct dirent *dent;
|
2111 | c18e2f94 | Sripathi Kodi | int32_t count; |
2112 | c18e2f94 | Sripathi Kodi | int32_t max_count; |
2113 | c18e2f94 | Sripathi Kodi | size_t offset; |
2114 | c18e2f94 | Sripathi Kodi | int64_t initial_offset; |
2115 | c18e2f94 | Sripathi Kodi | V9fsString name; |
2116 | c18e2f94 | Sripathi Kodi | } V9fsReadDirState; |
2117 | c18e2f94 | Sripathi Kodi | |
2118 | c18e2f94 | Sripathi Kodi | static void v9fs_readdir_post_seekdir(V9fsState *s, V9fsReadDirState *vs) |
2119 | c18e2f94 | Sripathi Kodi | { |
2120 | c18e2f94 | Sripathi Kodi | vs->offset += pdu_marshal(vs->pdu, vs->offset, "d", vs->count);
|
2121 | c18e2f94 | Sripathi Kodi | vs->offset += vs->count; |
2122 | c18e2f94 | Sripathi Kodi | complete_pdu(s, vs->pdu, vs->offset); |
2123 | c18e2f94 | Sripathi Kodi | qemu_free(vs); |
2124 | c18e2f94 | Sripathi Kodi | return;
|
2125 | c18e2f94 | Sripathi Kodi | } |
2126 | c18e2f94 | Sripathi Kodi | |
2127 | c18e2f94 | Sripathi Kodi | /* Size of each dirent on the wire: size of qid (13) + size of offset (8)
|
2128 | c18e2f94 | Sripathi Kodi | * size of type (1) + size of name.size (2) + strlen(name.data)
|
2129 | c18e2f94 | Sripathi Kodi | */
|
2130 | c18e2f94 | Sripathi Kodi | #define V9_READDIR_DATA_SZ (24 + strlen(vs->name.data)) |
2131 | c18e2f94 | Sripathi Kodi | |
2132 | c18e2f94 | Sripathi Kodi | static void v9fs_readdir_post_readdir(V9fsState *s, V9fsReadDirState *vs) |
2133 | c18e2f94 | Sripathi Kodi | { |
2134 | c18e2f94 | Sripathi Kodi | int len;
|
2135 | c18e2f94 | Sripathi Kodi | size_t size; |
2136 | c18e2f94 | Sripathi Kodi | |
2137 | c18e2f94 | Sripathi Kodi | if (vs->dent) {
|
2138 | c18e2f94 | Sripathi Kodi | v9fs_string_init(&vs->name); |
2139 | c18e2f94 | Sripathi Kodi | v9fs_string_sprintf(&vs->name, "%s", vs->dent->d_name);
|
2140 | c18e2f94 | Sripathi Kodi | |
2141 | c18e2f94 | Sripathi Kodi | if ((vs->count + V9_READDIR_DATA_SZ) > vs->max_count) {
|
2142 | c18e2f94 | Sripathi Kodi | /* Ran out of buffer. Set dir back to old position and return */
|
2143 | d62dbb51 | Aneesh Kumar K.V | v9fs_do_seekdir(s, vs->fidp->fs.dir, vs->saved_dir_pos); |
2144 | c18e2f94 | Sripathi Kodi | v9fs_readdir_post_seekdir(s, vs); |
2145 | c18e2f94 | Sripathi Kodi | return;
|
2146 | c18e2f94 | Sripathi Kodi | } |
2147 | c18e2f94 | Sripathi Kodi | |
2148 | c18e2f94 | Sripathi Kodi | /* Fill up just the path field of qid because the client uses
|
2149 | c18e2f94 | Sripathi Kodi | * only that. To fill the entire qid structure we will have
|
2150 | c18e2f94 | Sripathi Kodi | * to stat each dirent found, which is expensive
|
2151 | c18e2f94 | Sripathi Kodi | */
|
2152 | c18e2f94 | Sripathi Kodi | size = MIN(sizeof(vs->dent->d_ino), sizeof(vs->qid.path)); |
2153 | c18e2f94 | Sripathi Kodi | memcpy(&vs->qid.path, &vs->dent->d_ino, size); |
2154 | c18e2f94 | Sripathi Kodi | /* Fill the other fields with dummy values */
|
2155 | c18e2f94 | Sripathi Kodi | vs->qid.type = 0;
|
2156 | c18e2f94 | Sripathi Kodi | vs->qid.version = 0;
|
2157 | c18e2f94 | Sripathi Kodi | |
2158 | c18e2f94 | Sripathi Kodi | len = pdu_marshal(vs->pdu, vs->offset+4+vs->count, "Qqbs", |
2159 | c18e2f94 | Sripathi Kodi | &vs->qid, vs->dent->d_off, |
2160 | c18e2f94 | Sripathi Kodi | vs->dent->d_type, &vs->name); |
2161 | c18e2f94 | Sripathi Kodi | vs->count += len; |
2162 | c18e2f94 | Sripathi Kodi | v9fs_string_free(&vs->name); |
2163 | c18e2f94 | Sripathi Kodi | vs->saved_dir_pos = vs->dent->d_off; |
2164 | d62dbb51 | Aneesh Kumar K.V | vs->dent = v9fs_do_readdir(s, vs->fidp->fs.dir); |
2165 | c18e2f94 | Sripathi Kodi | v9fs_readdir_post_readdir(s, vs); |
2166 | c18e2f94 | Sripathi Kodi | return;
|
2167 | c18e2f94 | Sripathi Kodi | } |
2168 | c18e2f94 | Sripathi Kodi | |
2169 | c18e2f94 | Sripathi Kodi | vs->offset += pdu_marshal(vs->pdu, vs->offset, "d", vs->count);
|
2170 | c18e2f94 | Sripathi Kodi | vs->offset += vs->count; |
2171 | c18e2f94 | Sripathi Kodi | complete_pdu(s, vs->pdu, vs->offset); |
2172 | c18e2f94 | Sripathi Kodi | qemu_free(vs); |
2173 | c18e2f94 | Sripathi Kodi | return;
|
2174 | c18e2f94 | Sripathi Kodi | } |
2175 | c18e2f94 | Sripathi Kodi | |
2176 | c18e2f94 | Sripathi Kodi | static void v9fs_readdir_post_telldir(V9fsState *s, V9fsReadDirState *vs) |
2177 | c18e2f94 | Sripathi Kodi | { |
2178 | d62dbb51 | Aneesh Kumar K.V | vs->dent = v9fs_do_readdir(s, vs->fidp->fs.dir); |
2179 | c18e2f94 | Sripathi Kodi | v9fs_readdir_post_readdir(s, vs); |
2180 | c18e2f94 | Sripathi Kodi | return;
|
2181 | c18e2f94 | Sripathi Kodi | } |
2182 | c18e2f94 | Sripathi Kodi | |
2183 | c18e2f94 | Sripathi Kodi | static void v9fs_readdir_post_setdir(V9fsState *s, V9fsReadDirState *vs) |
2184 | c18e2f94 | Sripathi Kodi | { |
2185 | d62dbb51 | Aneesh Kumar K.V | vs->saved_dir_pos = v9fs_do_telldir(s, vs->fidp->fs.dir); |
2186 | c18e2f94 | Sripathi Kodi | v9fs_readdir_post_telldir(s, vs); |
2187 | c18e2f94 | Sripathi Kodi | return;
|
2188 | c18e2f94 | Sripathi Kodi | } |
2189 | c18e2f94 | Sripathi Kodi | |
2190 | c18e2f94 | Sripathi Kodi | static void v9fs_readdir(V9fsState *s, V9fsPDU *pdu) |
2191 | c18e2f94 | Sripathi Kodi | { |
2192 | c18e2f94 | Sripathi Kodi | int32_t fid; |
2193 | c18e2f94 | Sripathi Kodi | V9fsReadDirState *vs; |
2194 | c18e2f94 | Sripathi Kodi | ssize_t err = 0;
|
2195 | c18e2f94 | Sripathi Kodi | size_t offset = 7;
|
2196 | c18e2f94 | Sripathi Kodi | |
2197 | c18e2f94 | Sripathi Kodi | vs = qemu_malloc(sizeof(*vs));
|
2198 | c18e2f94 | Sripathi Kodi | vs->pdu = pdu; |
2199 | c18e2f94 | Sripathi Kodi | vs->offset = 7;
|
2200 | c18e2f94 | Sripathi Kodi | vs->count = 0;
|
2201 | c18e2f94 | Sripathi Kodi | |
2202 | c18e2f94 | Sripathi Kodi | pdu_unmarshal(vs->pdu, offset, "dqd", &fid, &vs->initial_offset,
|
2203 | c18e2f94 | Sripathi Kodi | &vs->max_count); |
2204 | c18e2f94 | Sripathi Kodi | |
2205 | c18e2f94 | Sripathi Kodi | vs->fidp = lookup_fid(s, fid); |
2206 | d62dbb51 | Aneesh Kumar K.V | if (vs->fidp == NULL || !(vs->fidp->fs.dir)) { |
2207 | c18e2f94 | Sripathi Kodi | err = -EINVAL; |
2208 | c18e2f94 | Sripathi Kodi | goto out;
|
2209 | c18e2f94 | Sripathi Kodi | } |
2210 | c18e2f94 | Sripathi Kodi | |
2211 | c18e2f94 | Sripathi Kodi | if (vs->initial_offset == 0) { |
2212 | d62dbb51 | Aneesh Kumar K.V | v9fs_do_rewinddir(s, vs->fidp->fs.dir); |
2213 | c18e2f94 | Sripathi Kodi | } else {
|
2214 | d62dbb51 | Aneesh Kumar K.V | v9fs_do_seekdir(s, vs->fidp->fs.dir, vs->initial_offset); |
2215 | c18e2f94 | Sripathi Kodi | } |
2216 | c18e2f94 | Sripathi Kodi | |
2217 | c18e2f94 | Sripathi Kodi | v9fs_readdir_post_setdir(s, vs); |
2218 | c18e2f94 | Sripathi Kodi | return;
|
2219 | c18e2f94 | Sripathi Kodi | |
2220 | c18e2f94 | Sripathi Kodi | out:
|
2221 | c18e2f94 | Sripathi Kodi | complete_pdu(s, pdu, err); |
2222 | c18e2f94 | Sripathi Kodi | qemu_free(vs); |
2223 | c18e2f94 | Sripathi Kodi | return;
|
2224 | c18e2f94 | Sripathi Kodi | } |
2225 | c18e2f94 | Sripathi Kodi | |
2226 | 56d15a53 | Sanchit Garg | static void v9fs_write_post_pwritev(V9fsState *s, V9fsWriteState *vs, |
2227 | 8449360c | Anthony Liguori | ssize_t err) |
2228 | 8449360c | Anthony Liguori | { |
2229 | 8449360c | Anthony Liguori | if (err < 0) { |
2230 | 8449360c | Anthony Liguori | /* IO error return the error */
|
2231 | 8449360c | Anthony Liguori | err = -errno; |
2232 | 8449360c | Anthony Liguori | goto out;
|
2233 | 8449360c | Anthony Liguori | } |
2234 | 8449360c | Anthony Liguori | vs->total += vs->len; |
2235 | 8449360c | Anthony Liguori | vs->sg = adjust_sg(vs->sg, vs->len, &vs->cnt); |
2236 | 8449360c | Anthony Liguori | if (vs->total < vs->count && vs->len > 0) { |
2237 | 8449360c | Anthony Liguori | do {
|
2238 | 8449360c | Anthony Liguori | if (0) { |
2239 | 8449360c | Anthony Liguori | print_sg(vs->sg, vs->cnt); |
2240 | 8449360c | Anthony Liguori | } |
2241 | 56d15a53 | Sanchit Garg | vs->len = v9fs_do_pwritev(s, vs->fidp->fs.fd, vs->sg, vs->cnt, |
2242 | 56d15a53 | Sanchit Garg | vs->off); |
2243 | 56d15a53 | Sanchit Garg | if (vs->len > 0) { |
2244 | 56d15a53 | Sanchit Garg | vs->off += vs->len; |
2245 | 56d15a53 | Sanchit Garg | } |
2246 | 8449360c | Anthony Liguori | } while (vs->len == -1 && errno == EINTR); |
2247 | 8449360c | Anthony Liguori | if (vs->len == -1) { |
2248 | 8449360c | Anthony Liguori | err = -errno; |
2249 | 8449360c | Anthony Liguori | } |
2250 | 56d15a53 | Sanchit Garg | v9fs_write_post_pwritev(s, vs, err); |
2251 | 8449360c | Anthony Liguori | return;
|
2252 | 8449360c | Anthony Liguori | } |
2253 | 8449360c | Anthony Liguori | vs->offset += pdu_marshal(vs->pdu, vs->offset, "d", vs->total);
|
2254 | 8449360c | Anthony Liguori | err = vs->offset; |
2255 | 8449360c | Anthony Liguori | out:
|
2256 | 8449360c | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
2257 | 8449360c | Anthony Liguori | qemu_free(vs); |
2258 | 8449360c | Anthony Liguori | } |
2259 | 8449360c | Anthony Liguori | |
2260 | 10b468bd | Aneesh Kumar K.V | static void v9fs_xattr_write(V9fsState *s, V9fsWriteState *vs) |
2261 | 10b468bd | Aneesh Kumar K.V | { |
2262 | 10b468bd | Aneesh Kumar K.V | int i, to_copy;
|
2263 | 10b468bd | Aneesh Kumar K.V | ssize_t err = 0;
|
2264 | 10b468bd | Aneesh Kumar K.V | int write_count;
|
2265 | 10b468bd | Aneesh Kumar K.V | int64_t xattr_len; |
2266 | 10b468bd | Aneesh Kumar K.V | |
2267 | 10b468bd | Aneesh Kumar K.V | xattr_len = vs->fidp->fs.xattr.len; |
2268 | 10b468bd | Aneesh Kumar K.V | write_count = xattr_len - vs->off; |
2269 | 10b468bd | Aneesh Kumar K.V | if (write_count > vs->count) {
|
2270 | 10b468bd | Aneesh Kumar K.V | write_count = vs->count; |
2271 | 10b468bd | Aneesh Kumar K.V | } else if (write_count < 0) { |
2272 | 10b468bd | Aneesh Kumar K.V | /*
|
2273 | 10b468bd | Aneesh Kumar K.V | * write beyond XATTR value len specified in
|
2274 | 10b468bd | Aneesh Kumar K.V | * xattrcreate
|
2275 | 10b468bd | Aneesh Kumar K.V | */
|
2276 | 10b468bd | Aneesh Kumar K.V | err = -ENOSPC; |
2277 | 10b468bd | Aneesh Kumar K.V | goto out;
|
2278 | 10b468bd | Aneesh Kumar K.V | } |
2279 | 10b468bd | Aneesh Kumar K.V | vs->offset += pdu_marshal(vs->pdu, vs->offset, "d", write_count);
|
2280 | 10b468bd | Aneesh Kumar K.V | err = vs->offset; |
2281 | 10b468bd | Aneesh Kumar K.V | vs->fidp->fs.xattr.copied_len += write_count; |
2282 | 10b468bd | Aneesh Kumar K.V | /*
|
2283 | 10b468bd | Aneesh Kumar K.V | * Now copy the content from sg list
|
2284 | 10b468bd | Aneesh Kumar K.V | */
|
2285 | 10b468bd | Aneesh Kumar K.V | for (i = 0; i < vs->cnt; i++) { |
2286 | 10b468bd | Aneesh Kumar K.V | if (write_count > vs->sg[i].iov_len) {
|
2287 | 10b468bd | Aneesh Kumar K.V | to_copy = vs->sg[i].iov_len; |
2288 | 10b468bd | Aneesh Kumar K.V | } else {
|
2289 | 10b468bd | Aneesh Kumar K.V | to_copy = write_count; |
2290 | 10b468bd | Aneesh Kumar K.V | } |
2291 | 10b468bd | Aneesh Kumar K.V | memcpy((char *)vs->fidp->fs.xattr.value + vs->off,
|
2292 | 10b468bd | Aneesh Kumar K.V | vs->sg[i].iov_base, to_copy); |
2293 | 10b468bd | Aneesh Kumar K.V | /* updating vs->off since we are not using below */
|
2294 | 10b468bd | Aneesh Kumar K.V | vs->off += to_copy; |
2295 | 10b468bd | Aneesh Kumar K.V | write_count -= to_copy; |
2296 | 10b468bd | Aneesh Kumar K.V | } |
2297 | 10b468bd | Aneesh Kumar K.V | out:
|
2298 | 10b468bd | Aneesh Kumar K.V | complete_pdu(s, vs->pdu, err); |
2299 | 10b468bd | Aneesh Kumar K.V | qemu_free(vs); |
2300 | 10b468bd | Aneesh Kumar K.V | } |
2301 | 10b468bd | Aneesh Kumar K.V | |
2302 | 9f107513 | Anthony Liguori | static void v9fs_write(V9fsState *s, V9fsPDU *pdu) |
2303 | 9f107513 | Anthony Liguori | { |
2304 | 8449360c | Anthony Liguori | int32_t fid; |
2305 | 8449360c | Anthony Liguori | V9fsWriteState *vs; |
2306 | 8449360c | Anthony Liguori | ssize_t err; |
2307 | 8449360c | Anthony Liguori | |
2308 | 8449360c | Anthony Liguori | vs = qemu_malloc(sizeof(*vs));
|
2309 | 8449360c | Anthony Liguori | |
2310 | 8449360c | Anthony Liguori | vs->pdu = pdu; |
2311 | 8449360c | Anthony Liguori | vs->offset = 7;
|
2312 | 8449360c | Anthony Liguori | vs->sg = vs->iov; |
2313 | 8449360c | Anthony Liguori | vs->total = 0;
|
2314 | 8449360c | Anthony Liguori | vs->len = 0;
|
2315 | 8449360c | Anthony Liguori | |
2316 | 8449360c | Anthony Liguori | pdu_unmarshal(vs->pdu, vs->offset, "dqdv", &fid, &vs->off, &vs->count,
|
2317 | 10b468bd | Aneesh Kumar K.V | vs->sg, &vs->cnt); |
2318 | 8449360c | Anthony Liguori | |
2319 | 8449360c | Anthony Liguori | vs->fidp = lookup_fid(s, fid); |
2320 | 8449360c | Anthony Liguori | if (vs->fidp == NULL) { |
2321 | 8449360c | Anthony Liguori | err = -EINVAL; |
2322 | 8449360c | Anthony Liguori | goto out;
|
2323 | 9f107513 | Anthony Liguori | } |
2324 | 8449360c | Anthony Liguori | |
2325 | 10b468bd | Aneesh Kumar K.V | if (vs->fidp->fid_type == P9_FID_FILE) {
|
2326 | 10b468bd | Aneesh Kumar K.V | if (vs->fidp->fs.fd == -1) { |
2327 | 10b468bd | Aneesh Kumar K.V | err = -EINVAL; |
2328 | 10b468bd | Aneesh Kumar K.V | goto out;
|
2329 | 10b468bd | Aneesh Kumar K.V | } |
2330 | 10b468bd | Aneesh Kumar K.V | } else if (vs->fidp->fid_type == P9_FID_XATTR) { |
2331 | 10b468bd | Aneesh Kumar K.V | /*
|
2332 | 10b468bd | Aneesh Kumar K.V | * setxattr operation
|
2333 | 10b468bd | Aneesh Kumar K.V | */
|
2334 | 10b468bd | Aneesh Kumar K.V | v9fs_xattr_write(s, vs); |
2335 | 10b468bd | Aneesh Kumar K.V | return;
|
2336 | 10b468bd | Aneesh Kumar K.V | } else {
|
2337 | 8449360c | Anthony Liguori | err = -EINVAL; |
2338 | 8449360c | Anthony Liguori | goto out;
|
2339 | 8449360c | Anthony Liguori | } |
2340 | 56d15a53 | Sanchit Garg | vs->sg = cap_sg(vs->sg, vs->count, &vs->cnt); |
2341 | 56d15a53 | Sanchit Garg | if (vs->total <= vs->count) {
|
2342 | 56d15a53 | Sanchit Garg | vs->len = v9fs_do_pwritev(s, vs->fidp->fs.fd, vs->sg, vs->cnt, vs->off); |
2343 | 56d15a53 | Sanchit Garg | if (vs->len > 0) { |
2344 | 56d15a53 | Sanchit Garg | vs->off += vs->len; |
2345 | 56d15a53 | Sanchit Garg | } |
2346 | 56d15a53 | Sanchit Garg | err = vs->len; |
2347 | 56d15a53 | Sanchit Garg | v9fs_write_post_pwritev(s, vs, err); |
2348 | 56d15a53 | Sanchit Garg | } |
2349 | 8449360c | Anthony Liguori | return;
|
2350 | 8449360c | Anthony Liguori | out:
|
2351 | 8449360c | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
2352 | 8449360c | Anthony Liguori | qemu_free(vs); |
2353 | 9f107513 | Anthony Liguori | } |
2354 | 9f107513 | Anthony Liguori | |
2355 | 5e94c103 | M. Mohan Kumar | static void v9fs_create_post_getiounit(V9fsState *s, V9fsCreateState *vs) |
2356 | c494dd6f | Anthony Liguori | { |
2357 | 5e94c103 | M. Mohan Kumar | int err;
|
2358 | 5e94c103 | M. Mohan Kumar | v9fs_string_copy(&vs->fidp->path, &vs->fullname); |
2359 | 5e94c103 | M. Mohan Kumar | stat_to_qid(&vs->stbuf, &vs->qid); |
2360 | c494dd6f | Anthony Liguori | |
2361 | 5e94c103 | M. Mohan Kumar | vs->offset += pdu_marshal(vs->pdu, vs->offset, "Qd", &vs->qid, vs->iounit);
|
2362 | 5e94c103 | M. Mohan Kumar | err = vs->offset; |
2363 | c494dd6f | Anthony Liguori | |
2364 | 5e94c103 | M. Mohan Kumar | complete_pdu(s, vs->pdu, err); |
2365 | 5e94c103 | M. Mohan Kumar | v9fs_string_free(&vs->name); |
2366 | 5e94c103 | M. Mohan Kumar | v9fs_string_free(&vs->extension); |
2367 | 5e94c103 | M. Mohan Kumar | v9fs_string_free(&vs->fullname); |
2368 | 5e94c103 | M. Mohan Kumar | qemu_free(vs); |
2369 | 5e94c103 | M. Mohan Kumar | } |
2370 | 5e94c103 | M. Mohan Kumar | |
2371 | 5e94c103 | M. Mohan Kumar | static void v9fs_post_create(V9fsState *s, V9fsCreateState *vs, int err) |
2372 | 5e94c103 | M. Mohan Kumar | { |
2373 | 5e94c103 | M. Mohan Kumar | if (err == 0) { |
2374 | 5e94c103 | M. Mohan Kumar | vs->iounit = get_iounit(s, &vs->fidp->path); |
2375 | 5e94c103 | M. Mohan Kumar | v9fs_create_post_getiounit(s, vs); |
2376 | 5e94c103 | M. Mohan Kumar | return;
|
2377 | c494dd6f | Anthony Liguori | } |
2378 | c494dd6f | Anthony Liguori | |
2379 | c494dd6f | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
2380 | c494dd6f | Anthony Liguori | v9fs_string_free(&vs->name); |
2381 | c494dd6f | Anthony Liguori | v9fs_string_free(&vs->extension); |
2382 | c494dd6f | Anthony Liguori | v9fs_string_free(&vs->fullname); |
2383 | c494dd6f | Anthony Liguori | qemu_free(vs); |
2384 | c494dd6f | Anthony Liguori | } |
2385 | c494dd6f | Anthony Liguori | |
2386 | c494dd6f | Anthony Liguori | static void v9fs_create_post_perms(V9fsState *s, V9fsCreateState *vs, int err) |
2387 | c494dd6f | Anthony Liguori | { |
2388 | c494dd6f | Anthony Liguori | if (err) {
|
2389 | c494dd6f | Anthony Liguori | err = -errno; |
2390 | c494dd6f | Anthony Liguori | } |
2391 | c494dd6f | Anthony Liguori | v9fs_post_create(s, vs, err); |
2392 | c494dd6f | Anthony Liguori | } |
2393 | c494dd6f | Anthony Liguori | |
2394 | c494dd6f | Anthony Liguori | static void v9fs_create_post_opendir(V9fsState *s, V9fsCreateState *vs, |
2395 | c494dd6f | Anthony Liguori | int err)
|
2396 | c494dd6f | Anthony Liguori | { |
2397 | d62dbb51 | Aneesh Kumar K.V | if (!vs->fidp->fs.dir) {
|
2398 | c494dd6f | Anthony Liguori | err = -errno; |
2399 | c494dd6f | Anthony Liguori | } |
2400 | d62dbb51 | Aneesh Kumar K.V | vs->fidp->fid_type = P9_FID_DIR; |
2401 | c494dd6f | Anthony Liguori | v9fs_post_create(s, vs, err); |
2402 | c494dd6f | Anthony Liguori | } |
2403 | c494dd6f | Anthony Liguori | |
2404 | c494dd6f | Anthony Liguori | static void v9fs_create_post_dir_lstat(V9fsState *s, V9fsCreateState *vs, |
2405 | c494dd6f | Anthony Liguori | int err)
|
2406 | c494dd6f | Anthony Liguori | { |
2407 | c494dd6f | Anthony Liguori | if (err) {
|
2408 | c494dd6f | Anthony Liguori | err = -errno; |
2409 | c494dd6f | Anthony Liguori | goto out;
|
2410 | c494dd6f | Anthony Liguori | } |
2411 | c494dd6f | Anthony Liguori | |
2412 | d62dbb51 | Aneesh Kumar K.V | vs->fidp->fs.dir = v9fs_do_opendir(s, &vs->fullname); |
2413 | c494dd6f | Anthony Liguori | v9fs_create_post_opendir(s, vs, err); |
2414 | c494dd6f | Anthony Liguori | return;
|
2415 | c494dd6f | Anthony Liguori | |
2416 | c494dd6f | Anthony Liguori | out:
|
2417 | c494dd6f | Anthony Liguori | v9fs_post_create(s, vs, err); |
2418 | c494dd6f | Anthony Liguori | } |
2419 | c494dd6f | Anthony Liguori | |
2420 | c494dd6f | Anthony Liguori | static void v9fs_create_post_mkdir(V9fsState *s, V9fsCreateState *vs, int err) |
2421 | c494dd6f | Anthony Liguori | { |
2422 | c494dd6f | Anthony Liguori | if (err) {
|
2423 | c494dd6f | Anthony Liguori | err = -errno; |
2424 | c494dd6f | Anthony Liguori | goto out;
|
2425 | c494dd6f | Anthony Liguori | } |
2426 | c494dd6f | Anthony Liguori | |
2427 | c494dd6f | Anthony Liguori | err = v9fs_do_lstat(s, &vs->fullname, &vs->stbuf); |
2428 | c494dd6f | Anthony Liguori | v9fs_create_post_dir_lstat(s, vs, err); |
2429 | c494dd6f | Anthony Liguori | return;
|
2430 | c494dd6f | Anthony Liguori | |
2431 | c494dd6f | Anthony Liguori | out:
|
2432 | c494dd6f | Anthony Liguori | v9fs_post_create(s, vs, err); |
2433 | c494dd6f | Anthony Liguori | } |
2434 | c494dd6f | Anthony Liguori | |
2435 | c494dd6f | Anthony Liguori | static void v9fs_create_post_fstat(V9fsState *s, V9fsCreateState *vs, int err) |
2436 | c494dd6f | Anthony Liguori | { |
2437 | c494dd6f | Anthony Liguori | if (err) {
|
2438 | d62dbb51 | Aneesh Kumar K.V | vs->fidp->fid_type = P9_FID_NONE; |
2439 | d62dbb51 | Aneesh Kumar K.V | close(vs->fidp->fs.fd); |
2440 | c494dd6f | Anthony Liguori | err = -errno; |
2441 | c494dd6f | Anthony Liguori | } |
2442 | c494dd6f | Anthony Liguori | v9fs_post_create(s, vs, err); |
2443 | c494dd6f | Anthony Liguori | return;
|
2444 | c494dd6f | Anthony Liguori | } |
2445 | c494dd6f | Anthony Liguori | |
2446 | c494dd6f | Anthony Liguori | static void v9fs_create_post_open2(V9fsState *s, V9fsCreateState *vs, int err) |
2447 | c494dd6f | Anthony Liguori | { |
2448 | d62dbb51 | Aneesh Kumar K.V | if (vs->fidp->fs.fd == -1) { |
2449 | c494dd6f | Anthony Liguori | err = -errno; |
2450 | c494dd6f | Anthony Liguori | goto out;
|
2451 | c494dd6f | Anthony Liguori | } |
2452 | d62dbb51 | Aneesh Kumar K.V | vs->fidp->fid_type = P9_FID_FILE; |
2453 | d62dbb51 | Aneesh Kumar K.V | err = v9fs_do_fstat(s, vs->fidp->fs.fd, &vs->stbuf); |
2454 | c494dd6f | Anthony Liguori | v9fs_create_post_fstat(s, vs, err); |
2455 | c494dd6f | Anthony Liguori | |
2456 | c494dd6f | Anthony Liguori | return;
|
2457 | c494dd6f | Anthony Liguori | |
2458 | c494dd6f | Anthony Liguori | out:
|
2459 | c494dd6f | Anthony Liguori | v9fs_post_create(s, vs, err); |
2460 | c494dd6f | Anthony Liguori | |
2461 | c494dd6f | Anthony Liguori | } |
2462 | c494dd6f | Anthony Liguori | |
2463 | c494dd6f | Anthony Liguori | static void v9fs_create_post_lstat(V9fsState *s, V9fsCreateState *vs, int err) |
2464 | c494dd6f | Anthony Liguori | { |
2465 | c494dd6f | Anthony Liguori | |
2466 | c494dd6f | Anthony Liguori | if (err == 0 || errno != ENOENT) { |
2467 | c494dd6f | Anthony Liguori | err = -errno; |
2468 | c494dd6f | Anthony Liguori | goto out;
|
2469 | c494dd6f | Anthony Liguori | } |
2470 | c494dd6f | Anthony Liguori | |
2471 | c494dd6f | Anthony Liguori | if (vs->perm & P9_STAT_MODE_DIR) {
|
2472 | b67592ea | M. Mohan Kumar | err = v9fs_do_mkdir(s, vs->fullname.data, vs->perm & 0777,
|
2473 | b67592ea | M. Mohan Kumar | vs->fidp->uid, -1);
|
2474 | c494dd6f | Anthony Liguori | v9fs_create_post_mkdir(s, vs, err); |
2475 | c494dd6f | Anthony Liguori | } else if (vs->perm & P9_STAT_MODE_SYMLINK) { |
2476 | 08c60fc9 | Venkateswararao Jujjuri (JV) | err = v9fs_do_symlink(s, vs->fidp, vs->extension.data, |
2477 | 08c60fc9 | Venkateswararao Jujjuri (JV) | vs->fullname.data, -1);
|
2478 | c494dd6f | Anthony Liguori | v9fs_create_post_perms(s, vs, err); |
2479 | c494dd6f | Anthony Liguori | } else if (vs->perm & P9_STAT_MODE_LINK) { |
2480 | c494dd6f | Anthony Liguori | int32_t nfid = atoi(vs->extension.data); |
2481 | c494dd6f | Anthony Liguori | V9fsFidState *nfidp = lookup_fid(s, nfid); |
2482 | c494dd6f | Anthony Liguori | if (nfidp == NULL) { |
2483 | c494dd6f | Anthony Liguori | err = -errno; |
2484 | c494dd6f | Anthony Liguori | v9fs_post_create(s, vs, err); |
2485 | c494dd6f | Anthony Liguori | } |
2486 | c494dd6f | Anthony Liguori | err = v9fs_do_link(s, &nfidp->path, &vs->fullname); |
2487 | c494dd6f | Anthony Liguori | v9fs_create_post_perms(s, vs, err); |
2488 | c494dd6f | Anthony Liguori | } else if (vs->perm & P9_STAT_MODE_DEVICE) { |
2489 | c494dd6f | Anthony Liguori | char ctype;
|
2490 | c494dd6f | Anthony Liguori | uint32_t major, minor; |
2491 | c494dd6f | Anthony Liguori | mode_t nmode = 0;
|
2492 | c494dd6f | Anthony Liguori | |
2493 | c494dd6f | Anthony Liguori | if (sscanf(vs->extension.data, "%c %u %u", &ctype, &major, |
2494 | c494dd6f | Anthony Liguori | &minor) != 3) {
|
2495 | c494dd6f | Anthony Liguori | err = -errno; |
2496 | c494dd6f | Anthony Liguori | v9fs_post_create(s, vs, err); |
2497 | c494dd6f | Anthony Liguori | } |
2498 | c494dd6f | Anthony Liguori | |
2499 | c494dd6f | Anthony Liguori | switch (ctype) {
|
2500 | c494dd6f | Anthony Liguori | case 'c': |
2501 | c494dd6f | Anthony Liguori | nmode = S_IFCHR; |
2502 | c494dd6f | Anthony Liguori | break;
|
2503 | c494dd6f | Anthony Liguori | case 'b': |
2504 | c494dd6f | Anthony Liguori | nmode = S_IFBLK; |
2505 | c494dd6f | Anthony Liguori | break;
|
2506 | c494dd6f | Anthony Liguori | default:
|
2507 | c494dd6f | Anthony Liguori | err = -EIO; |
2508 | c494dd6f | Anthony Liguori | v9fs_post_create(s, vs, err); |
2509 | c494dd6f | Anthony Liguori | } |
2510 | c494dd6f | Anthony Liguori | |
2511 | c494dd6f | Anthony Liguori | nmode |= vs->perm & 0777;
|
2512 | 5268cecc | M. Mohan Kumar | err = v9fs_do_mknod(s, vs->fullname.data, nmode, |
2513 | 5268cecc | M. Mohan Kumar | makedev(major, minor), vs->fidp->uid, -1);
|
2514 | c494dd6f | Anthony Liguori | v9fs_create_post_perms(s, vs, err); |
2515 | c494dd6f | Anthony Liguori | } else if (vs->perm & P9_STAT_MODE_NAMED_PIPE) { |
2516 | 5268cecc | M. Mohan Kumar | err = v9fs_do_mknod(s, vs->fullname.data, S_IFIFO | (vs->perm & 0777),
|
2517 | 5268cecc | M. Mohan Kumar | 0, vs->fidp->uid, -1); |
2518 | c494dd6f | Anthony Liguori | v9fs_post_create(s, vs, err); |
2519 | c494dd6f | Anthony Liguori | } else if (vs->perm & P9_STAT_MODE_SOCKET) { |
2520 | 5268cecc | M. Mohan Kumar | err = v9fs_do_mknod(s, vs->fullname.data, S_IFSOCK | (vs->perm & 0777),
|
2521 | 5268cecc | M. Mohan Kumar | 0, vs->fidp->uid, -1); |
2522 | 63729c36 | Venkateswararao Jujjuri (JV) | v9fs_post_create(s, vs, err); |
2523 | c494dd6f | Anthony Liguori | } else {
|
2524 | d62dbb51 | Aneesh Kumar K.V | vs->fidp->fs.fd = v9fs_do_open2(s, vs->fullname.data, vs->fidp->uid, |
2525 | c1568af5 | Venkateswararao Jujjuri (JV) | -1, omode_to_uflags(vs->mode)|O_CREAT, vs->perm);
|
2526 | c1568af5 | Venkateswararao Jujjuri (JV) | |
2527 | c494dd6f | Anthony Liguori | v9fs_create_post_open2(s, vs, err); |
2528 | c494dd6f | Anthony Liguori | } |
2529 | c494dd6f | Anthony Liguori | |
2530 | c494dd6f | Anthony Liguori | return;
|
2531 | c494dd6f | Anthony Liguori | |
2532 | c494dd6f | Anthony Liguori | out:
|
2533 | c494dd6f | Anthony Liguori | v9fs_post_create(s, vs, err); |
2534 | c494dd6f | Anthony Liguori | } |
2535 | c494dd6f | Anthony Liguori | |
2536 | 9f107513 | Anthony Liguori | static void v9fs_create(V9fsState *s, V9fsPDU *pdu) |
2537 | 9f107513 | Anthony Liguori | { |
2538 | c494dd6f | Anthony Liguori | int32_t fid; |
2539 | c494dd6f | Anthony Liguori | V9fsCreateState *vs; |
2540 | c494dd6f | Anthony Liguori | int err = 0; |
2541 | c494dd6f | Anthony Liguori | |
2542 | c494dd6f | Anthony Liguori | vs = qemu_malloc(sizeof(*vs));
|
2543 | c494dd6f | Anthony Liguori | vs->pdu = pdu; |
2544 | c494dd6f | Anthony Liguori | vs->offset = 7;
|
2545 | c494dd6f | Anthony Liguori | |
2546 | c494dd6f | Anthony Liguori | v9fs_string_init(&vs->fullname); |
2547 | c494dd6f | Anthony Liguori | |
2548 | c494dd6f | Anthony Liguori | pdu_unmarshal(vs->pdu, vs->offset, "dsdbs", &fid, &vs->name,
|
2549 | c494dd6f | Anthony Liguori | &vs->perm, &vs->mode, &vs->extension); |
2550 | c494dd6f | Anthony Liguori | |
2551 | c494dd6f | Anthony Liguori | vs->fidp = lookup_fid(s, fid); |
2552 | c494dd6f | Anthony Liguori | if (vs->fidp == NULL) { |
2553 | c494dd6f | Anthony Liguori | err = -EINVAL; |
2554 | c494dd6f | Anthony Liguori | goto out;
|
2555 | 9f107513 | Anthony Liguori | } |
2556 | c494dd6f | Anthony Liguori | |
2557 | c494dd6f | Anthony Liguori | v9fs_string_sprintf(&vs->fullname, "%s/%s", vs->fidp->path.data,
|
2558 | c494dd6f | Anthony Liguori | vs->name.data); |
2559 | c494dd6f | Anthony Liguori | |
2560 | c494dd6f | Anthony Liguori | err = v9fs_do_lstat(s, &vs->fullname, &vs->stbuf); |
2561 | c494dd6f | Anthony Liguori | v9fs_create_post_lstat(s, vs, err); |
2562 | c494dd6f | Anthony Liguori | return;
|
2563 | c494dd6f | Anthony Liguori | |
2564 | c494dd6f | Anthony Liguori | out:
|
2565 | c494dd6f | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
2566 | c494dd6f | Anthony Liguori | v9fs_string_free(&vs->name); |
2567 | c494dd6f | Anthony Liguori | v9fs_string_free(&vs->extension); |
2568 | c494dd6f | Anthony Liguori | qemu_free(vs); |
2569 | 9f107513 | Anthony Liguori | } |
2570 | 9f107513 | Anthony Liguori | |
2571 | 08c60fc9 | Venkateswararao Jujjuri (JV) | static void v9fs_post_symlink(V9fsState *s, V9fsSymlinkState *vs, int err) |
2572 | 08c60fc9 | Venkateswararao Jujjuri (JV) | { |
2573 | 08c60fc9 | Venkateswararao Jujjuri (JV) | if (err == 0) { |
2574 | 08c60fc9 | Venkateswararao Jujjuri (JV) | stat_to_qid(&vs->stbuf, &vs->qid); |
2575 | 08c60fc9 | Venkateswararao Jujjuri (JV) | vs->offset += pdu_marshal(vs->pdu, vs->offset, "Q", &vs->qid);
|
2576 | 08c60fc9 | Venkateswararao Jujjuri (JV) | err = vs->offset; |
2577 | 08c60fc9 | Venkateswararao Jujjuri (JV) | } else {
|
2578 | 08c60fc9 | Venkateswararao Jujjuri (JV) | err = -errno; |
2579 | 08c60fc9 | Venkateswararao Jujjuri (JV) | } |
2580 | 08c60fc9 | Venkateswararao Jujjuri (JV) | complete_pdu(s, vs->pdu, err); |
2581 | 08c60fc9 | Venkateswararao Jujjuri (JV) | v9fs_string_free(&vs->name); |
2582 | 08c60fc9 | Venkateswararao Jujjuri (JV) | v9fs_string_free(&vs->symname); |
2583 | 08c60fc9 | Venkateswararao Jujjuri (JV) | v9fs_string_free(&vs->fullname); |
2584 | 08c60fc9 | Venkateswararao Jujjuri (JV) | qemu_free(vs); |
2585 | 08c60fc9 | Venkateswararao Jujjuri (JV) | } |
2586 | 08c60fc9 | Venkateswararao Jujjuri (JV) | |
2587 | 08c60fc9 | Venkateswararao Jujjuri (JV) | static void v9fs_symlink_post_do_symlink(V9fsState *s, V9fsSymlinkState *vs, |
2588 | 08c60fc9 | Venkateswararao Jujjuri (JV) | int err)
|
2589 | 08c60fc9 | Venkateswararao Jujjuri (JV) | { |
2590 | 08c60fc9 | Venkateswararao Jujjuri (JV) | if (err) {
|
2591 | 08c60fc9 | Venkateswararao Jujjuri (JV) | goto out;
|
2592 | 08c60fc9 | Venkateswararao Jujjuri (JV) | } |
2593 | 08c60fc9 | Venkateswararao Jujjuri (JV) | err = v9fs_do_lstat(s, &vs->fullname, &vs->stbuf); |
2594 | 08c60fc9 | Venkateswararao Jujjuri (JV) | out:
|
2595 | 08c60fc9 | Venkateswararao Jujjuri (JV) | v9fs_post_symlink(s, vs, err); |
2596 | 08c60fc9 | Venkateswararao Jujjuri (JV) | } |
2597 | 08c60fc9 | Venkateswararao Jujjuri (JV) | |
2598 | 08c60fc9 | Venkateswararao Jujjuri (JV) | static void v9fs_symlink(V9fsState *s, V9fsPDU *pdu) |
2599 | 08c60fc9 | Venkateswararao Jujjuri (JV) | { |
2600 | 08c60fc9 | Venkateswararao Jujjuri (JV) | int32_t dfid; |
2601 | 08c60fc9 | Venkateswararao Jujjuri (JV) | V9fsSymlinkState *vs; |
2602 | 08c60fc9 | Venkateswararao Jujjuri (JV) | int err = 0; |
2603 | 08c60fc9 | Venkateswararao Jujjuri (JV) | gid_t gid; |
2604 | 08c60fc9 | Venkateswararao Jujjuri (JV) | |
2605 | 08c60fc9 | Venkateswararao Jujjuri (JV) | vs = qemu_malloc(sizeof(*vs));
|
2606 | 08c60fc9 | Venkateswararao Jujjuri (JV) | vs->pdu = pdu; |
2607 | 08c60fc9 | Venkateswararao Jujjuri (JV) | vs->offset = 7;
|
2608 | 08c60fc9 | Venkateswararao Jujjuri (JV) | |
2609 | 08c60fc9 | Venkateswararao Jujjuri (JV) | v9fs_string_init(&vs->fullname); |
2610 | 08c60fc9 | Venkateswararao Jujjuri (JV) | |
2611 | 08c60fc9 | Venkateswararao Jujjuri (JV) | pdu_unmarshal(vs->pdu, vs->offset, "dssd", &dfid, &vs->name,
|
2612 | 08c60fc9 | Venkateswararao Jujjuri (JV) | &vs->symname, &gid); |
2613 | 08c60fc9 | Venkateswararao Jujjuri (JV) | |
2614 | 08c60fc9 | Venkateswararao Jujjuri (JV) | vs->dfidp = lookup_fid(s, dfid); |
2615 | 08c60fc9 | Venkateswararao Jujjuri (JV) | if (vs->dfidp == NULL) { |
2616 | 08c60fc9 | Venkateswararao Jujjuri (JV) | err = -EINVAL; |
2617 | 08c60fc9 | Venkateswararao Jujjuri (JV) | goto out;
|
2618 | 08c60fc9 | Venkateswararao Jujjuri (JV) | } |
2619 | 08c60fc9 | Venkateswararao Jujjuri (JV) | |
2620 | 08c60fc9 | Venkateswararao Jujjuri (JV) | v9fs_string_sprintf(&vs->fullname, "%s/%s", vs->dfidp->path.data,
|
2621 | 08c60fc9 | Venkateswararao Jujjuri (JV) | vs->name.data); |
2622 | 08c60fc9 | Venkateswararao Jujjuri (JV) | err = v9fs_do_symlink(s, vs->dfidp, vs->symname.data, |
2623 | 08c60fc9 | Venkateswararao Jujjuri (JV) | vs->fullname.data, gid); |
2624 | 08c60fc9 | Venkateswararao Jujjuri (JV) | v9fs_symlink_post_do_symlink(s, vs, err); |
2625 | 08c60fc9 | Venkateswararao Jujjuri (JV) | return;
|
2626 | 08c60fc9 | Venkateswararao Jujjuri (JV) | |
2627 | 08c60fc9 | Venkateswararao Jujjuri (JV) | out:
|
2628 | 08c60fc9 | Venkateswararao Jujjuri (JV) | complete_pdu(s, vs->pdu, err); |
2629 | 08c60fc9 | Venkateswararao Jujjuri (JV) | v9fs_string_free(&vs->name); |
2630 | 08c60fc9 | Venkateswararao Jujjuri (JV) | v9fs_string_free(&vs->symname); |
2631 | 08c60fc9 | Venkateswararao Jujjuri (JV) | qemu_free(vs); |
2632 | 08c60fc9 | Venkateswararao Jujjuri (JV) | } |
2633 | 08c60fc9 | Venkateswararao Jujjuri (JV) | |
2634 | 9f107513 | Anthony Liguori | static void v9fs_flush(V9fsState *s, V9fsPDU *pdu) |
2635 | 9f107513 | Anthony Liguori | { |
2636 | 9c5e9d89 | Anthony Liguori | /* A nop call with no return */
|
2637 | 9c5e9d89 | Anthony Liguori | complete_pdu(s, pdu, 7);
|
2638 | 9f107513 | Anthony Liguori | } |
2639 | 9f107513 | Anthony Liguori | |
2640 | b2c224be | Venkateswararao Jujjuri (JV) | static void v9fs_link(V9fsState *s, V9fsPDU *pdu) |
2641 | b2c224be | Venkateswararao Jujjuri (JV) | { |
2642 | b2c224be | Venkateswararao Jujjuri (JV) | int32_t dfid, oldfid; |
2643 | b2c224be | Venkateswararao Jujjuri (JV) | V9fsFidState *dfidp, *oldfidp; |
2644 | b2c224be | Venkateswararao Jujjuri (JV) | V9fsString name, fullname; |
2645 | b2c224be | Venkateswararao Jujjuri (JV) | size_t offset = 7;
|
2646 | b2c224be | Venkateswararao Jujjuri (JV) | int err = 0; |
2647 | b2c224be | Venkateswararao Jujjuri (JV) | |
2648 | b2c224be | Venkateswararao Jujjuri (JV) | v9fs_string_init(&fullname); |
2649 | b2c224be | Venkateswararao Jujjuri (JV) | |
2650 | b2c224be | Venkateswararao Jujjuri (JV) | pdu_unmarshal(pdu, offset, "dds", &dfid, &oldfid, &name);
|
2651 | b2c224be | Venkateswararao Jujjuri (JV) | |
2652 | b2c224be | Venkateswararao Jujjuri (JV) | dfidp = lookup_fid(s, dfid); |
2653 | b2c224be | Venkateswararao Jujjuri (JV) | if (dfidp == NULL) { |
2654 | b2c224be | Venkateswararao Jujjuri (JV) | err = -errno; |
2655 | b2c224be | Venkateswararao Jujjuri (JV) | goto out;
|
2656 | b2c224be | Venkateswararao Jujjuri (JV) | } |
2657 | b2c224be | Venkateswararao Jujjuri (JV) | |
2658 | b2c224be | Venkateswararao Jujjuri (JV) | oldfidp = lookup_fid(s, oldfid); |
2659 | b2c224be | Venkateswararao Jujjuri (JV) | if (oldfidp == NULL) { |
2660 | b2c224be | Venkateswararao Jujjuri (JV) | err = -errno; |
2661 | b2c224be | Venkateswararao Jujjuri (JV) | goto out;
|
2662 | b2c224be | Venkateswararao Jujjuri (JV) | } |
2663 | b2c224be | Venkateswararao Jujjuri (JV) | |
2664 | b2c224be | Venkateswararao Jujjuri (JV) | v9fs_string_sprintf(&fullname, "%s/%s", dfidp->path.data, name.data);
|
2665 | b2c224be | Venkateswararao Jujjuri (JV) | err = offset; |
2666 | b2c224be | Venkateswararao Jujjuri (JV) | err = v9fs_do_link(s, &oldfidp->path, &fullname); |
2667 | b2c224be | Venkateswararao Jujjuri (JV) | if (err) {
|
2668 | b2c224be | Venkateswararao Jujjuri (JV) | err = -errno; |
2669 | b2c224be | Venkateswararao Jujjuri (JV) | } |
2670 | b2c224be | Venkateswararao Jujjuri (JV) | v9fs_string_free(&fullname); |
2671 | b2c224be | Venkateswararao Jujjuri (JV) | |
2672 | b2c224be | Venkateswararao Jujjuri (JV) | out:
|
2673 | b2c224be | Venkateswararao Jujjuri (JV) | v9fs_string_free(&name); |
2674 | b2c224be | Venkateswararao Jujjuri (JV) | complete_pdu(s, pdu, err); |
2675 | b2c224be | Venkateswararao Jujjuri (JV) | } |
2676 | b2c224be | Venkateswararao Jujjuri (JV) | |
2677 | 5bae1900 | Anthony Liguori | static void v9fs_remove_post_remove(V9fsState *s, V9fsRemoveState *vs, |
2678 | 5bae1900 | Anthony Liguori | int err)
|
2679 | 5bae1900 | Anthony Liguori | { |
2680 | 5bae1900 | Anthony Liguori | if (err < 0) { |
2681 | 926487b7 | Sripathi Kodi | err = -errno; |
2682 | 926487b7 | Sripathi Kodi | } else {
|
2683 | 926487b7 | Sripathi Kodi | err = vs->offset; |
2684 | 5bae1900 | Anthony Liguori | } |
2685 | 5bae1900 | Anthony Liguori | |
2686 | 926487b7 | Sripathi Kodi | /* For TREMOVE we need to clunk the fid even on failed remove */
|
2687 | 926487b7 | Sripathi Kodi | free_fid(s, vs->fidp->fid); |
2688 | 926487b7 | Sripathi Kodi | |
2689 | 5bae1900 | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
2690 | 5bae1900 | Anthony Liguori | qemu_free(vs); |
2691 | 5bae1900 | Anthony Liguori | } |
2692 | 5bae1900 | Anthony Liguori | |
2693 | 9f107513 | Anthony Liguori | static void v9fs_remove(V9fsState *s, V9fsPDU *pdu) |
2694 | 9f107513 | Anthony Liguori | { |
2695 | 5bae1900 | Anthony Liguori | int32_t fid; |
2696 | 5bae1900 | Anthony Liguori | V9fsRemoveState *vs; |
2697 | 5bae1900 | Anthony Liguori | int err = 0; |
2698 | 5bae1900 | Anthony Liguori | |
2699 | 5bae1900 | Anthony Liguori | vs = qemu_malloc(sizeof(*vs));
|
2700 | 5bae1900 | Anthony Liguori | vs->pdu = pdu; |
2701 | 5bae1900 | Anthony Liguori | vs->offset = 7;
|
2702 | 5bae1900 | Anthony Liguori | |
2703 | 5bae1900 | Anthony Liguori | pdu_unmarshal(vs->pdu, vs->offset, "d", &fid);
|
2704 | 5bae1900 | Anthony Liguori | |
2705 | 5bae1900 | Anthony Liguori | vs->fidp = lookup_fid(s, fid); |
2706 | 5bae1900 | Anthony Liguori | if (vs->fidp == NULL) { |
2707 | 5bae1900 | Anthony Liguori | err = -EINVAL; |
2708 | 5bae1900 | Anthony Liguori | goto out;
|
2709 | 9f107513 | Anthony Liguori | } |
2710 | 5bae1900 | Anthony Liguori | |
2711 | 5bae1900 | Anthony Liguori | err = v9fs_do_remove(s, &vs->fidp->path); |
2712 | 5bae1900 | Anthony Liguori | v9fs_remove_post_remove(s, vs, err); |
2713 | 5bae1900 | Anthony Liguori | return;
|
2714 | 5bae1900 | Anthony Liguori | |
2715 | 5bae1900 | Anthony Liguori | out:
|
2716 | 5bae1900 | Anthony Liguori | complete_pdu(s, pdu, err); |
2717 | 5bae1900 | Anthony Liguori | qemu_free(vs); |
2718 | 9f107513 | Anthony Liguori | } |
2719 | 9f107513 | Anthony Liguori | |
2720 | 8cf89e00 | Anthony Liguori | static void v9fs_wstat_post_truncate(V9fsState *s, V9fsWstatState *vs, int err) |
2721 | 8cf89e00 | Anthony Liguori | { |
2722 | 8cf89e00 | Anthony Liguori | if (err < 0) { |
2723 | 8cf89e00 | Anthony Liguori | goto out;
|
2724 | 8cf89e00 | Anthony Liguori | } |
2725 | 8cf89e00 | Anthony Liguori | |
2726 | 8cf89e00 | Anthony Liguori | err = vs->offset; |
2727 | 8cf89e00 | Anthony Liguori | |
2728 | 8cf89e00 | Anthony Liguori | out:
|
2729 | 8cf89e00 | Anthony Liguori | v9fs_stat_free(&vs->v9stat); |
2730 | 8cf89e00 | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
2731 | 8cf89e00 | Anthony Liguori | qemu_free(vs); |
2732 | 8cf89e00 | Anthony Liguori | } |
2733 | 8cf89e00 | Anthony Liguori | |
2734 | 8cf89e00 | Anthony Liguori | static void v9fs_wstat_post_rename(V9fsState *s, V9fsWstatState *vs, int err) |
2735 | 8cf89e00 | Anthony Liguori | { |
2736 | 8cf89e00 | Anthony Liguori | if (err < 0) { |
2737 | 8cf89e00 | Anthony Liguori | goto out;
|
2738 | 8cf89e00 | Anthony Liguori | } |
2739 | 8cf89e00 | Anthony Liguori | if (vs->v9stat.length != -1) { |
2740 | 8cf89e00 | Anthony Liguori | if (v9fs_do_truncate(s, &vs->fidp->path, vs->v9stat.length) < 0) { |
2741 | 8cf89e00 | Anthony Liguori | err = -errno; |
2742 | 8cf89e00 | Anthony Liguori | } |
2743 | 8cf89e00 | Anthony Liguori | } |
2744 | 8cf89e00 | Anthony Liguori | v9fs_wstat_post_truncate(s, vs, err); |
2745 | 8cf89e00 | Anthony Liguori | return;
|
2746 | 8cf89e00 | Anthony Liguori | |
2747 | 8cf89e00 | Anthony Liguori | out:
|
2748 | 8cf89e00 | Anthony Liguori | v9fs_stat_free(&vs->v9stat); |
2749 | 8cf89e00 | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
2750 | 8cf89e00 | Anthony Liguori | qemu_free(vs); |
2751 | 8cf89e00 | Anthony Liguori | } |
2752 | 8cf89e00 | Anthony Liguori | |
2753 | c7b4b0b3 | M. Mohan Kumar | static int v9fs_complete_rename(V9fsState *s, V9fsRenameState *vs) |
2754 | 8cf89e00 | Anthony Liguori | { |
2755 | c7b4b0b3 | M. Mohan Kumar | int err = 0; |
2756 | c7b4b0b3 | M. Mohan Kumar | char *old_name, *new_name;
|
2757 | c7b4b0b3 | M. Mohan Kumar | char *end;
|
2758 | 8cf89e00 | Anthony Liguori | |
2759 | c7b4b0b3 | M. Mohan Kumar | if (vs->newdirfid != -1) { |
2760 | c7b4b0b3 | M. Mohan Kumar | V9fsFidState *dirfidp; |
2761 | c7b4b0b3 | M. Mohan Kumar | dirfidp = lookup_fid(s, vs->newdirfid); |
2762 | c7b4b0b3 | M. Mohan Kumar | |
2763 | c7b4b0b3 | M. Mohan Kumar | if (dirfidp == NULL) { |
2764 | c7b4b0b3 | M. Mohan Kumar | err = -ENOENT; |
2765 | c7b4b0b3 | M. Mohan Kumar | goto out;
|
2766 | c7b4b0b3 | M. Mohan Kumar | } |
2767 | c7b4b0b3 | M. Mohan Kumar | |
2768 | d62dbb51 | Aneesh Kumar K.V | BUG_ON(dirfidp->fid_type != P9_FID_NONE); |
2769 | 8cf89e00 | Anthony Liguori | |
2770 | c7b4b0b3 | M. Mohan Kumar | new_name = qemu_mallocz(dirfidp->path.size + vs->name.size + 2);
|
2771 | c7b4b0b3 | M. Mohan Kumar | |
2772 | c7b4b0b3 | M. Mohan Kumar | strcpy(new_name, dirfidp->path.data); |
2773 | c7b4b0b3 | M. Mohan Kumar | strcat(new_name, "/");
|
2774 | c7b4b0b3 | M. Mohan Kumar | strcat(new_name + dirfidp->path.size, vs->name.data); |
2775 | c7b4b0b3 | M. Mohan Kumar | } else {
|
2776 | 8cf89e00 | Anthony Liguori | old_name = vs->fidp->path.data; |
2777 | 8cf89e00 | Anthony Liguori | end = strrchr(old_name, '/');
|
2778 | 8cf89e00 | Anthony Liguori | if (end) {
|
2779 | 8cf89e00 | Anthony Liguori | end++; |
2780 | 8cf89e00 | Anthony Liguori | } else {
|
2781 | 8cf89e00 | Anthony Liguori | end = old_name; |
2782 | 8cf89e00 | Anthony Liguori | } |
2783 | c7b4b0b3 | M. Mohan Kumar | new_name = qemu_mallocz(end - old_name + vs->name.size + 1);
|
2784 | 8cf89e00 | Anthony Liguori | |
2785 | c7b4b0b3 | M. Mohan Kumar | strncat(new_name, old_name, end - old_name); |
2786 | c7b4b0b3 | M. Mohan Kumar | strncat(new_name + (end - old_name), vs->name.data, vs->name.size); |
2787 | c7b4b0b3 | M. Mohan Kumar | } |
2788 | 8cf89e00 | Anthony Liguori | |
2789 | c7b4b0b3 | M. Mohan Kumar | v9fs_string_free(&vs->name); |
2790 | c7b4b0b3 | M. Mohan Kumar | vs->name.data = qemu_strdup(new_name); |
2791 | c7b4b0b3 | M. Mohan Kumar | vs->name.size = strlen(new_name); |
2792 | 8cf89e00 | Anthony Liguori | |
2793 | c7b4b0b3 | M. Mohan Kumar | if (strcmp(new_name, vs->fidp->path.data) != 0) { |
2794 | c7b4b0b3 | M. Mohan Kumar | if (v9fs_do_rename(s, &vs->fidp->path, &vs->name)) {
|
2795 | c7b4b0b3 | M. Mohan Kumar | err = -errno; |
2796 | c7b4b0b3 | M. Mohan Kumar | } else {
|
2797 | c7b4b0b3 | M. Mohan Kumar | V9fsFidState *fidp; |
2798 | c7b4b0b3 | M. Mohan Kumar | /*
|
2799 | c7b4b0b3 | M. Mohan Kumar | * Fixup fid's pointing to the old name to
|
2800 | c7b4b0b3 | M. Mohan Kumar | * start pointing to the new name
|
2801 | c7b4b0b3 | M. Mohan Kumar | */
|
2802 | c7b4b0b3 | M. Mohan Kumar | for (fidp = s->fid_list; fidp; fidp = fidp->next) {
|
2803 | c7b4b0b3 | M. Mohan Kumar | if (vs->fidp == fidp) {
|
2804 | c7b4b0b3 | M. Mohan Kumar | /*
|
2805 | c7b4b0b3 | M. Mohan Kumar | * we replace name of this fid towards the end
|
2806 | c7b4b0b3 | M. Mohan Kumar | * so that our below strcmp will work
|
2807 | c7b4b0b3 | M. Mohan Kumar | */
|
2808 | c7b4b0b3 | M. Mohan Kumar | continue;
|
2809 | c7b4b0b3 | M. Mohan Kumar | } |
2810 | c7b4b0b3 | M. Mohan Kumar | if (!strncmp(vs->fidp->path.data, fidp->path.data,
|
2811 | c7b4b0b3 | M. Mohan Kumar | strlen(vs->fidp->path.data))) { |
2812 | c7b4b0b3 | M. Mohan Kumar | /* replace the name */
|
2813 | c7b4b0b3 | M. Mohan Kumar | v9fs_fix_path(&fidp->path, &vs->name, |
2814 | c7b4b0b3 | M. Mohan Kumar | strlen(vs->fidp->path.data)); |
2815 | 8cf89e00 | Anthony Liguori | } |
2816 | 8cf89e00 | Anthony Liguori | } |
2817 | c7b4b0b3 | M. Mohan Kumar | v9fs_string_copy(&vs->fidp->path, &vs->name); |
2818 | 8cf89e00 | Anthony Liguori | } |
2819 | 8cf89e00 | Anthony Liguori | } |
2820 | c7b4b0b3 | M. Mohan Kumar | out:
|
2821 | c7b4b0b3 | M. Mohan Kumar | v9fs_string_free(&vs->name); |
2822 | c7b4b0b3 | M. Mohan Kumar | return err;
|
2823 | c7b4b0b3 | M. Mohan Kumar | } |
2824 | c7b4b0b3 | M. Mohan Kumar | |
2825 | c7b4b0b3 | M. Mohan Kumar | static void v9fs_rename_post_rename(V9fsState *s, V9fsRenameState *vs, int err) |
2826 | c7b4b0b3 | M. Mohan Kumar | { |
2827 | c7b4b0b3 | M. Mohan Kumar | complete_pdu(s, vs->pdu, err); |
2828 | c7b4b0b3 | M. Mohan Kumar | qemu_free(vs); |
2829 | c7b4b0b3 | M. Mohan Kumar | } |
2830 | c7b4b0b3 | M. Mohan Kumar | |
2831 | c7b4b0b3 | M. Mohan Kumar | static void v9fs_wstat_post_chown(V9fsState *s, V9fsWstatState *vs, int err) |
2832 | c7b4b0b3 | M. Mohan Kumar | { |
2833 | c7b4b0b3 | M. Mohan Kumar | if (err < 0) { |
2834 | c7b4b0b3 | M. Mohan Kumar | goto out;
|
2835 | c7b4b0b3 | M. Mohan Kumar | } |
2836 | c7b4b0b3 | M. Mohan Kumar | |
2837 | c7b4b0b3 | M. Mohan Kumar | if (vs->v9stat.name.size != 0) { |
2838 | c7b4b0b3 | M. Mohan Kumar | V9fsRenameState *vr; |
2839 | c7b4b0b3 | M. Mohan Kumar | |
2840 | 783f04e1 | Aneesh Kumar K.V | vr = qemu_mallocz(sizeof(V9fsRenameState));
|
2841 | c7b4b0b3 | M. Mohan Kumar | vr->newdirfid = -1;
|
2842 | c7b4b0b3 | M. Mohan Kumar | vr->pdu = vs->pdu; |
2843 | c7b4b0b3 | M. Mohan Kumar | vr->fidp = vs->fidp; |
2844 | c7b4b0b3 | M. Mohan Kumar | vr->offset = vs->offset; |
2845 | c7b4b0b3 | M. Mohan Kumar | vr->name.size = vs->v9stat.name.size; |
2846 | c7b4b0b3 | M. Mohan Kumar | vr->name.data = qemu_strdup(vs->v9stat.name.data); |
2847 | c7b4b0b3 | M. Mohan Kumar | |
2848 | c7b4b0b3 | M. Mohan Kumar | err = v9fs_complete_rename(s, vr); |
2849 | c7b4b0b3 | M. Mohan Kumar | qemu_free(vr); |
2850 | c7b4b0b3 | M. Mohan Kumar | } |
2851 | 8cf89e00 | Anthony Liguori | v9fs_wstat_post_rename(s, vs, err); |
2852 | 8cf89e00 | Anthony Liguori | return;
|
2853 | 8cf89e00 | Anthony Liguori | |
2854 | 8cf89e00 | Anthony Liguori | out:
|
2855 | 8cf89e00 | Anthony Liguori | v9fs_stat_free(&vs->v9stat); |
2856 | 8cf89e00 | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
2857 | 8cf89e00 | Anthony Liguori | qemu_free(vs); |
2858 | 8cf89e00 | Anthony Liguori | } |
2859 | 8cf89e00 | Anthony Liguori | |
2860 | c7b4b0b3 | M. Mohan Kumar | static void v9fs_rename(V9fsState *s, V9fsPDU *pdu) |
2861 | c7b4b0b3 | M. Mohan Kumar | { |
2862 | c7b4b0b3 | M. Mohan Kumar | int32_t fid; |
2863 | c7b4b0b3 | M. Mohan Kumar | V9fsRenameState *vs; |
2864 | c7b4b0b3 | M. Mohan Kumar | ssize_t err = 0;
|
2865 | c7b4b0b3 | M. Mohan Kumar | |
2866 | c7b4b0b3 | M. Mohan Kumar | vs = qemu_malloc(sizeof(*vs));
|
2867 | c7b4b0b3 | M. Mohan Kumar | vs->pdu = pdu; |
2868 | c7b4b0b3 | M. Mohan Kumar | vs->offset = 7;
|
2869 | c7b4b0b3 | M. Mohan Kumar | |
2870 | c7b4b0b3 | M. Mohan Kumar | pdu_unmarshal(vs->pdu, vs->offset, "dds", &fid, &vs->newdirfid, &vs->name);
|
2871 | c7b4b0b3 | M. Mohan Kumar | |
2872 | c7b4b0b3 | M. Mohan Kumar | vs->fidp = lookup_fid(s, fid); |
2873 | c7b4b0b3 | M. Mohan Kumar | if (vs->fidp == NULL) { |
2874 | c7b4b0b3 | M. Mohan Kumar | err = -ENOENT; |
2875 | c7b4b0b3 | M. Mohan Kumar | goto out;
|
2876 | c7b4b0b3 | M. Mohan Kumar | } |
2877 | c7b4b0b3 | M. Mohan Kumar | |
2878 | d62dbb51 | Aneesh Kumar K.V | BUG_ON(vs->fidp->fid_type != P9_FID_NONE); |
2879 | c7b4b0b3 | M. Mohan Kumar | |
2880 | c7b4b0b3 | M. Mohan Kumar | err = v9fs_complete_rename(s, vs); |
2881 | c7b4b0b3 | M. Mohan Kumar | v9fs_rename_post_rename(s, vs, err); |
2882 | c7b4b0b3 | M. Mohan Kumar | return;
|
2883 | c7b4b0b3 | M. Mohan Kumar | out:
|
2884 | c7b4b0b3 | M. Mohan Kumar | complete_pdu(s, vs->pdu, err); |
2885 | c7b4b0b3 | M. Mohan Kumar | qemu_free(vs); |
2886 | c7b4b0b3 | M. Mohan Kumar | } |
2887 | c7b4b0b3 | M. Mohan Kumar | |
2888 | 8cf89e00 | Anthony Liguori | static void v9fs_wstat_post_utime(V9fsState *s, V9fsWstatState *vs, int err) |
2889 | 8cf89e00 | Anthony Liguori | { |
2890 | 8cf89e00 | Anthony Liguori | if (err < 0) { |
2891 | 8cf89e00 | Anthony Liguori | goto out;
|
2892 | 8cf89e00 | Anthony Liguori | } |
2893 | 8cf89e00 | Anthony Liguori | |
2894 | f7613bee | Venkateswararao Jujjuri (JV) | if (vs->v9stat.n_gid != -1 || vs->v9stat.n_uid != -1) { |
2895 | 8cf89e00 | Anthony Liguori | if (v9fs_do_chown(s, &vs->fidp->path, vs->v9stat.n_uid,
|
2896 | 8cf89e00 | Anthony Liguori | vs->v9stat.n_gid)) { |
2897 | 8cf89e00 | Anthony Liguori | err = -errno; |
2898 | 8cf89e00 | Anthony Liguori | } |
2899 | 8cf89e00 | Anthony Liguori | } |
2900 | 8cf89e00 | Anthony Liguori | v9fs_wstat_post_chown(s, vs, err); |
2901 | 8cf89e00 | Anthony Liguori | return;
|
2902 | 8cf89e00 | Anthony Liguori | |
2903 | 8cf89e00 | Anthony Liguori | out:
|
2904 | 8cf89e00 | Anthony Liguori | v9fs_stat_free(&vs->v9stat); |
2905 | 8cf89e00 | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
2906 | 8cf89e00 | Anthony Liguori | qemu_free(vs); |
2907 | 8cf89e00 | Anthony Liguori | } |
2908 | 8cf89e00 | Anthony Liguori | |
2909 | 8cf89e00 | Anthony Liguori | static void v9fs_wstat_post_chmod(V9fsState *s, V9fsWstatState *vs, int err) |
2910 | 8cf89e00 | Anthony Liguori | { |
2911 | 8cf89e00 | Anthony Liguori | if (err < 0) { |
2912 | 8cf89e00 | Anthony Liguori | goto out;
|
2913 | 8cf89e00 | Anthony Liguori | } |
2914 | 8cf89e00 | Anthony Liguori | |
2915 | 74bc02b2 | M. Mohan Kumar | if (vs->v9stat.mtime != -1 || vs->v9stat.atime != -1) { |
2916 | 8fc39ae4 | Sripathi Kodi | struct timespec times[2]; |
2917 | 8fc39ae4 | Sripathi Kodi | if (vs->v9stat.atime != -1) { |
2918 | 8fc39ae4 | Sripathi Kodi | times[0].tv_sec = vs->v9stat.atime;
|
2919 | 8fc39ae4 | Sripathi Kodi | times[0].tv_nsec = 0; |
2920 | 8fc39ae4 | Sripathi Kodi | } else {
|
2921 | 8fc39ae4 | Sripathi Kodi | times[0].tv_nsec = UTIME_OMIT;
|
2922 | 8fc39ae4 | Sripathi Kodi | } |
2923 | 8fc39ae4 | Sripathi Kodi | if (vs->v9stat.mtime != -1) { |
2924 | 8fc39ae4 | Sripathi Kodi | times[1].tv_sec = vs->v9stat.mtime;
|
2925 | 8fc39ae4 | Sripathi Kodi | times[1].tv_nsec = 0; |
2926 | 8fc39ae4 | Sripathi Kodi | } else {
|
2927 | 8fc39ae4 | Sripathi Kodi | times[1].tv_nsec = UTIME_OMIT;
|
2928 | 8fc39ae4 | Sripathi Kodi | } |
2929 | 8fc39ae4 | Sripathi Kodi | |
2930 | 8fc39ae4 | Sripathi Kodi | if (v9fs_do_utimensat(s, &vs->fidp->path, times)) {
|
2931 | 8cf89e00 | Anthony Liguori | err = -errno; |
2932 | 8cf89e00 | Anthony Liguori | } |
2933 | 8cf89e00 | Anthony Liguori | } |
2934 | 8cf89e00 | Anthony Liguori | |
2935 | 8cf89e00 | Anthony Liguori | v9fs_wstat_post_utime(s, vs, err); |
2936 | 8cf89e00 | Anthony Liguori | return;
|
2937 | 8cf89e00 | Anthony Liguori | |
2938 | 8cf89e00 | Anthony Liguori | out:
|
2939 | 8cf89e00 | Anthony Liguori | v9fs_stat_free(&vs->v9stat); |
2940 | 8cf89e00 | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
2941 | 8cf89e00 | Anthony Liguori | qemu_free(vs); |
2942 | 8cf89e00 | Anthony Liguori | } |
2943 | 8cf89e00 | Anthony Liguori | |
2944 | 8cf89e00 | Anthony Liguori | static void v9fs_wstat_post_fsync(V9fsState *s, V9fsWstatState *vs, int err) |
2945 | 8cf89e00 | Anthony Liguori | { |
2946 | 8cf89e00 | Anthony Liguori | if (err == -1) { |
2947 | 8cf89e00 | Anthony Liguori | err = -errno; |
2948 | 8cf89e00 | Anthony Liguori | } |
2949 | 8cf89e00 | Anthony Liguori | v9fs_stat_free(&vs->v9stat); |
2950 | 8cf89e00 | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
2951 | 8cf89e00 | Anthony Liguori | qemu_free(vs); |
2952 | 8cf89e00 | Anthony Liguori | } |
2953 | 8cf89e00 | Anthony Liguori | |
2954 | 8cf89e00 | Anthony Liguori | static void v9fs_wstat_post_lstat(V9fsState *s, V9fsWstatState *vs, int err) |
2955 | 8cf89e00 | Anthony Liguori | { |
2956 | 8cf89e00 | Anthony Liguori | uint32_t v9_mode; |
2957 | 8cf89e00 | Anthony Liguori | |
2958 | 8cf89e00 | Anthony Liguori | if (err == -1) { |
2959 | 8cf89e00 | Anthony Liguori | err = -errno; |
2960 | 8cf89e00 | Anthony Liguori | goto out;
|
2961 | 8cf89e00 | Anthony Liguori | } |
2962 | 8cf89e00 | Anthony Liguori | |
2963 | 8cf89e00 | Anthony Liguori | v9_mode = stat_to_v9mode(&vs->stbuf); |
2964 | 8cf89e00 | Anthony Liguori | |
2965 | 8cf89e00 | Anthony Liguori | if ((vs->v9stat.mode & P9_STAT_MODE_TYPE_BITS) !=
|
2966 | 8cf89e00 | Anthony Liguori | (v9_mode & P9_STAT_MODE_TYPE_BITS)) { |
2967 | 8cf89e00 | Anthony Liguori | /* Attempting to change the type */
|
2968 | 8cf89e00 | Anthony Liguori | err = -EIO; |
2969 | 8cf89e00 | Anthony Liguori | goto out;
|
2970 | 8cf89e00 | Anthony Liguori | } |
2971 | 8cf89e00 | Anthony Liguori | |
2972 | 8cf89e00 | Anthony Liguori | if (v9fs_do_chmod(s, &vs->fidp->path, v9mode_to_mode(vs->v9stat.mode,
|
2973 | 8cf89e00 | Anthony Liguori | &vs->v9stat.extension))) { |
2974 | 8cf89e00 | Anthony Liguori | err = -errno; |
2975 | 8cf89e00 | Anthony Liguori | } |
2976 | 8cf89e00 | Anthony Liguori | v9fs_wstat_post_chmod(s, vs, err); |
2977 | 8cf89e00 | Anthony Liguori | return;
|
2978 | 8cf89e00 | Anthony Liguori | |
2979 | 8cf89e00 | Anthony Liguori | out:
|
2980 | 8cf89e00 | Anthony Liguori | v9fs_stat_free(&vs->v9stat); |
2981 | 8cf89e00 | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
2982 | 8cf89e00 | Anthony Liguori | qemu_free(vs); |
2983 | 8cf89e00 | Anthony Liguori | } |
2984 | 8cf89e00 | Anthony Liguori | |
2985 | 9f107513 | Anthony Liguori | static void v9fs_wstat(V9fsState *s, V9fsPDU *pdu) |
2986 | 9f107513 | Anthony Liguori | { |
2987 | 8cf89e00 | Anthony Liguori | int32_t fid; |
2988 | 8cf89e00 | Anthony Liguori | V9fsWstatState *vs; |
2989 | 8cf89e00 | Anthony Liguori | int err = 0; |
2990 | 8cf89e00 | Anthony Liguori | |
2991 | 8cf89e00 | Anthony Liguori | vs = qemu_malloc(sizeof(*vs));
|
2992 | 8cf89e00 | Anthony Liguori | vs->pdu = pdu; |
2993 | 8cf89e00 | Anthony Liguori | vs->offset = 7;
|
2994 | 8cf89e00 | Anthony Liguori | |
2995 | 8cf89e00 | Anthony Liguori | pdu_unmarshal(pdu, vs->offset, "dwS", &fid, &vs->unused, &vs->v9stat);
|
2996 | 8cf89e00 | Anthony Liguori | |
2997 | 8cf89e00 | Anthony Liguori | vs->fidp = lookup_fid(s, fid); |
2998 | 8cf89e00 | Anthony Liguori | if (vs->fidp == NULL) { |
2999 | 8cf89e00 | Anthony Liguori | err = -EINVAL; |
3000 | 8cf89e00 | Anthony Liguori | goto out;
|
3001 | 9f107513 | Anthony Liguori | } |
3002 | 8cf89e00 | Anthony Liguori | |
3003 | 8cf89e00 | Anthony Liguori | /* do we need to sync the file? */
|
3004 | 8cf89e00 | Anthony Liguori | if (donttouch_stat(&vs->v9stat)) {
|
3005 | 49594973 | Venkateswararao Jujjuri (JV) | err = v9fs_do_fsync(s, vs->fidp->fs.fd, 0);
|
3006 | 8cf89e00 | Anthony Liguori | v9fs_wstat_post_fsync(s, vs, err); |
3007 | 8cf89e00 | Anthony Liguori | return;
|
3008 | 8cf89e00 | Anthony Liguori | } |
3009 | 8cf89e00 | Anthony Liguori | |
3010 | 8cf89e00 | Anthony Liguori | if (vs->v9stat.mode != -1) { |
3011 | 8cf89e00 | Anthony Liguori | err = v9fs_do_lstat(s, &vs->fidp->path, &vs->stbuf); |
3012 | 8cf89e00 | Anthony Liguori | v9fs_wstat_post_lstat(s, vs, err); |
3013 | 8cf89e00 | Anthony Liguori | return;
|
3014 | 8cf89e00 | Anthony Liguori | } |
3015 | 8cf89e00 | Anthony Liguori | |
3016 | 8cf89e00 | Anthony Liguori | v9fs_wstat_post_chmod(s, vs, err); |
3017 | 8cf89e00 | Anthony Liguori | return;
|
3018 | 8cf89e00 | Anthony Liguori | |
3019 | 8cf89e00 | Anthony Liguori | out:
|
3020 | 8cf89e00 | Anthony Liguori | v9fs_stat_free(&vs->v9stat); |
3021 | 8cf89e00 | Anthony Liguori | complete_pdu(s, vs->pdu, err); |
3022 | 8cf89e00 | Anthony Liguori | qemu_free(vs); |
3023 | 9f107513 | Anthony Liguori | } |
3024 | 9f107513 | Anthony Liguori | |
3025 | be940c87 | M. Mohan Kumar | static void v9fs_statfs_post_statfs(V9fsState *s, V9fsStatfsState *vs, int err) |
3026 | be940c87 | M. Mohan Kumar | { |
3027 | 5e94c103 | M. Mohan Kumar | int32_t bsize_factor; |
3028 | 5e94c103 | M. Mohan Kumar | |
3029 | be940c87 | M. Mohan Kumar | if (err) {
|
3030 | be940c87 | M. Mohan Kumar | err = -errno; |
3031 | be940c87 | M. Mohan Kumar | goto out;
|
3032 | be940c87 | M. Mohan Kumar | } |
3033 | be940c87 | M. Mohan Kumar | |
3034 | 5e94c103 | M. Mohan Kumar | /*
|
3035 | 5e94c103 | M. Mohan Kumar | * compute bsize factor based on host file system block size
|
3036 | 5e94c103 | M. Mohan Kumar | * and client msize
|
3037 | 5e94c103 | M. Mohan Kumar | */
|
3038 | 5e94c103 | M. Mohan Kumar | bsize_factor = (s->msize - P9_IOHDRSZ)/vs->stbuf.f_bsize; |
3039 | 5e94c103 | M. Mohan Kumar | if (!bsize_factor) {
|
3040 | 5e94c103 | M. Mohan Kumar | bsize_factor = 1;
|
3041 | 5e94c103 | M. Mohan Kumar | } |
3042 | be940c87 | M. Mohan Kumar | vs->v9statfs.f_type = vs->stbuf.f_type; |
3043 | be940c87 | M. Mohan Kumar | vs->v9statfs.f_bsize = vs->stbuf.f_bsize; |
3044 | 5e94c103 | M. Mohan Kumar | vs->v9statfs.f_bsize *= bsize_factor; |
3045 | 5e94c103 | M. Mohan Kumar | /*
|
3046 | 5e94c103 | M. Mohan Kumar | * f_bsize is adjusted(multiplied) by bsize factor, so we need to
|
3047 | 5e94c103 | M. Mohan Kumar | * adjust(divide) the number of blocks, free blocks and available
|
3048 | 5e94c103 | M. Mohan Kumar | * blocks by bsize factor
|
3049 | 5e94c103 | M. Mohan Kumar | */
|
3050 | 5e94c103 | M. Mohan Kumar | vs->v9statfs.f_blocks = vs->stbuf.f_blocks/bsize_factor; |
3051 | 5e94c103 | M. Mohan Kumar | vs->v9statfs.f_bfree = vs->stbuf.f_bfree/bsize_factor; |
3052 | 5e94c103 | M. Mohan Kumar | vs->v9statfs.f_bavail = vs->stbuf.f_bavail/bsize_factor; |
3053 | be940c87 | M. Mohan Kumar | vs->v9statfs.f_files = vs->stbuf.f_files; |
3054 | be940c87 | M. Mohan Kumar | vs->v9statfs.f_ffree = vs->stbuf.f_ffree; |
3055 | be940c87 | M. Mohan Kumar | vs->v9statfs.fsid_val = (unsigned int) vs->stbuf.f_fsid.__val[0] | |
3056 | be940c87 | M. Mohan Kumar | (unsigned long long)vs->stbuf.f_fsid.__val[1] << 32; |
3057 | be940c87 | M. Mohan Kumar | vs->v9statfs.f_namelen = vs->stbuf.f_namelen; |
3058 | be940c87 | M. Mohan Kumar | |
3059 | be940c87 | M. Mohan Kumar | vs->offset += pdu_marshal(vs->pdu, vs->offset, "ddqqqqqqd",
|
3060 | be940c87 | M. Mohan Kumar | vs->v9statfs.f_type, vs->v9statfs.f_bsize, vs->v9statfs.f_blocks, |
3061 | be940c87 | M. Mohan Kumar | vs->v9statfs.f_bfree, vs->v9statfs.f_bavail, vs->v9statfs.f_files, |
3062 | be940c87 | M. Mohan Kumar | vs->v9statfs.f_ffree, vs->v9statfs.fsid_val, |
3063 | be940c87 | M. Mohan Kumar | vs->v9statfs.f_namelen); |
3064 | be940c87 | M. Mohan Kumar | |
3065 | be940c87 | M. Mohan Kumar | out:
|
3066 | be940c87 | M. Mohan Kumar | complete_pdu(s, vs->pdu, vs->offset); |
3067 | be940c87 | M. Mohan Kumar | qemu_free(vs); |
3068 | be940c87 | M. Mohan Kumar | } |
3069 | be940c87 | M. Mohan Kumar | |
3070 | be940c87 | M. Mohan Kumar | static void v9fs_statfs(V9fsState *s, V9fsPDU *pdu) |
3071 | be940c87 | M. Mohan Kumar | { |
3072 | be940c87 | M. Mohan Kumar | V9fsStatfsState *vs; |
3073 | be940c87 | M. Mohan Kumar | ssize_t err = 0;
|
3074 | be940c87 | M. Mohan Kumar | |
3075 | be940c87 | M. Mohan Kumar | vs = qemu_malloc(sizeof(*vs));
|
3076 | be940c87 | M. Mohan Kumar | vs->pdu = pdu; |
3077 | be940c87 | M. Mohan Kumar | vs->offset = 7;
|
3078 | be940c87 | M. Mohan Kumar | |
3079 | be940c87 | M. Mohan Kumar | memset(&vs->v9statfs, 0, sizeof(vs->v9statfs)); |
3080 | be940c87 | M. Mohan Kumar | |
3081 | be940c87 | M. Mohan Kumar | pdu_unmarshal(vs->pdu, vs->offset, "d", &vs->fid);
|
3082 | be940c87 | M. Mohan Kumar | |
3083 | be940c87 | M. Mohan Kumar | vs->fidp = lookup_fid(s, vs->fid); |
3084 | be940c87 | M. Mohan Kumar | if (vs->fidp == NULL) { |
3085 | be940c87 | M. Mohan Kumar | err = -ENOENT; |
3086 | be940c87 | M. Mohan Kumar | goto out;
|
3087 | be940c87 | M. Mohan Kumar | } |
3088 | be940c87 | M. Mohan Kumar | |
3089 | be940c87 | M. Mohan Kumar | err = v9fs_do_statfs(s, &vs->fidp->path, &vs->stbuf); |
3090 | be940c87 | M. Mohan Kumar | v9fs_statfs_post_statfs(s, vs, err); |
3091 | be940c87 | M. Mohan Kumar | return;
|
3092 | be940c87 | M. Mohan Kumar | |
3093 | be940c87 | M. Mohan Kumar | out:
|
3094 | be940c87 | M. Mohan Kumar | complete_pdu(s, vs->pdu, err); |
3095 | be940c87 | M. Mohan Kumar | qemu_free(vs); |
3096 | be940c87 | M. Mohan Kumar | } |
3097 | be940c87 | M. Mohan Kumar | |
3098 | 5268cecc | M. Mohan Kumar | static void v9fs_mknod_post_lstat(V9fsState *s, V9fsMkState *vs, int err) |
3099 | 5268cecc | M. Mohan Kumar | { |
3100 | 5268cecc | M. Mohan Kumar | if (err == -1) { |
3101 | 5268cecc | M. Mohan Kumar | err = -errno; |
3102 | 5268cecc | M. Mohan Kumar | goto out;
|
3103 | 5268cecc | M. Mohan Kumar | } |
3104 | 5268cecc | M. Mohan Kumar | |
3105 | 5268cecc | M. Mohan Kumar | stat_to_qid(&vs->stbuf, &vs->qid); |
3106 | 5268cecc | M. Mohan Kumar | vs->offset += pdu_marshal(vs->pdu, vs->offset, "Q", &vs->qid);
|
3107 | 5268cecc | M. Mohan Kumar | err = vs->offset; |
3108 | 5268cecc | M. Mohan Kumar | out:
|
3109 | 5268cecc | M. Mohan Kumar | complete_pdu(s, vs->pdu, err); |
3110 | 5268cecc | M. Mohan Kumar | v9fs_string_free(&vs->fullname); |
3111 | 5268cecc | M. Mohan Kumar | v9fs_string_free(&vs->name); |
3112 | 5268cecc | M. Mohan Kumar | qemu_free(vs); |
3113 | 5268cecc | M. Mohan Kumar | } |
3114 | 5268cecc | M. Mohan Kumar | |
3115 | 5268cecc | M. Mohan Kumar | static void v9fs_mknod_post_mknod(V9fsState *s, V9fsMkState *vs, int err) |
3116 | 5268cecc | M. Mohan Kumar | { |
3117 | 5268cecc | M. Mohan Kumar | if (err == -1) { |
3118 | 5268cecc | M. Mohan Kumar | err = -errno; |
3119 | 5268cecc | M. Mohan Kumar | goto out;
|
3120 | 5268cecc | M. Mohan Kumar | } |
3121 | 5268cecc | M. Mohan Kumar | |
3122 | 5268cecc | M. Mohan Kumar | err = v9fs_do_lstat(s, &vs->fullname, &vs->stbuf); |
3123 | 5268cecc | M. Mohan Kumar | v9fs_mknod_post_lstat(s, vs, err); |
3124 | 5268cecc | M. Mohan Kumar | return;
|
3125 | 5268cecc | M. Mohan Kumar | out:
|
3126 | 5268cecc | M. Mohan Kumar | complete_pdu(s, vs->pdu, err); |
3127 | 5268cecc | M. Mohan Kumar | v9fs_string_free(&vs->fullname); |
3128 | 5268cecc | M. Mohan Kumar | v9fs_string_free(&vs->name); |
3129 | 5268cecc | M. Mohan Kumar | qemu_free(vs); |
3130 | 5268cecc | M. Mohan Kumar | } |
3131 | 5268cecc | M. Mohan Kumar | |
3132 | 5268cecc | M. Mohan Kumar | static void v9fs_mknod(V9fsState *s, V9fsPDU *pdu) |
3133 | 5268cecc | M. Mohan Kumar | { |
3134 | 5268cecc | M. Mohan Kumar | int32_t fid; |
3135 | 5268cecc | M. Mohan Kumar | V9fsMkState *vs; |
3136 | 5268cecc | M. Mohan Kumar | int err = 0; |
3137 | 5268cecc | M. Mohan Kumar | V9fsFidState *fidp; |
3138 | 5268cecc | M. Mohan Kumar | gid_t gid; |
3139 | 5268cecc | M. Mohan Kumar | int mode;
|
3140 | 5268cecc | M. Mohan Kumar | int major, minor;
|
3141 | 5268cecc | M. Mohan Kumar | |
3142 | 5268cecc | M. Mohan Kumar | vs = qemu_malloc(sizeof(*vs));
|
3143 | 5268cecc | M. Mohan Kumar | vs->pdu = pdu; |
3144 | 5268cecc | M. Mohan Kumar | vs->offset = 7;
|
3145 | 5268cecc | M. Mohan Kumar | |
3146 | 5268cecc | M. Mohan Kumar | v9fs_string_init(&vs->fullname); |
3147 | 5268cecc | M. Mohan Kumar | pdu_unmarshal(vs->pdu, vs->offset, "dsdddd", &fid, &vs->name, &mode,
|
3148 | 5268cecc | M. Mohan Kumar | &major, &minor, &gid); |
3149 | 5268cecc | M. Mohan Kumar | |
3150 | 5268cecc | M. Mohan Kumar | fidp = lookup_fid(s, fid); |
3151 | 5268cecc | M. Mohan Kumar | if (fidp == NULL) { |
3152 | 5268cecc | M. Mohan Kumar | err = -ENOENT; |
3153 | 5268cecc | M. Mohan Kumar | goto out;
|
3154 | 5268cecc | M. Mohan Kumar | } |
3155 | 5268cecc | M. Mohan Kumar | |
3156 | 5268cecc | M. Mohan Kumar | v9fs_string_sprintf(&vs->fullname, "%s/%s", fidp->path.data, vs->name.data);
|
3157 | 5268cecc | M. Mohan Kumar | err = v9fs_do_mknod(s, vs->fullname.data, mode, makedev(major, minor), |
3158 | 5268cecc | M. Mohan Kumar | fidp->uid, gid); |
3159 | 5268cecc | M. Mohan Kumar | v9fs_mknod_post_mknod(s, vs, err); |
3160 | 5268cecc | M. Mohan Kumar | return;
|
3161 | 5268cecc | M. Mohan Kumar | |
3162 | 5268cecc | M. Mohan Kumar | out:
|
3163 | 5268cecc | M. Mohan Kumar | complete_pdu(s, vs->pdu, err); |
3164 | 5268cecc | M. Mohan Kumar | v9fs_string_free(&vs->fullname); |
3165 | 5268cecc | M. Mohan Kumar | v9fs_string_free(&vs->name); |
3166 | 5268cecc | M. Mohan Kumar | qemu_free(vs); |
3167 | 5268cecc | M. Mohan Kumar | } |
3168 | 5268cecc | M. Mohan Kumar | |
3169 | 82cc3ee8 | M. Mohan Kumar | /*
|
3170 | 82cc3ee8 | M. Mohan Kumar | * Implement posix byte range locking code
|
3171 | 82cc3ee8 | M. Mohan Kumar | * Server side handling of locking code is very simple, because 9p server in
|
3172 | 82cc3ee8 | M. Mohan Kumar | * QEMU can handle only one client. And most of the lock handling
|
3173 | 82cc3ee8 | M. Mohan Kumar | * (like conflict, merging) etc is done by the VFS layer itself, so no need to
|
3174 | 82cc3ee8 | M. Mohan Kumar | * do any thing in * qemu 9p server side lock code path.
|
3175 | 82cc3ee8 | M. Mohan Kumar | * So when a TLOCK request comes, always return success
|
3176 | 82cc3ee8 | M. Mohan Kumar | */
|
3177 | 82cc3ee8 | M. Mohan Kumar | |
3178 | 82cc3ee8 | M. Mohan Kumar | static void v9fs_lock(V9fsState *s, V9fsPDU *pdu) |
3179 | 82cc3ee8 | M. Mohan Kumar | { |
3180 | 82cc3ee8 | M. Mohan Kumar | int32_t fid, err = 0;
|
3181 | 82cc3ee8 | M. Mohan Kumar | V9fsLockState *vs; |
3182 | 82cc3ee8 | M. Mohan Kumar | |
3183 | 82cc3ee8 | M. Mohan Kumar | vs = qemu_mallocz(sizeof(*vs));
|
3184 | 82cc3ee8 | M. Mohan Kumar | vs->pdu = pdu; |
3185 | 82cc3ee8 | M. Mohan Kumar | vs->offset = 7;
|
3186 | 82cc3ee8 | M. Mohan Kumar | |
3187 | 82cc3ee8 | M. Mohan Kumar | vs->flock = qemu_malloc(sizeof(*vs->flock));
|
3188 | 82cc3ee8 | M. Mohan Kumar | pdu_unmarshal(vs->pdu, vs->offset, "dbdqqds", &fid, &vs->flock->type,
|
3189 | 82cc3ee8 | M. Mohan Kumar | &vs->flock->flags, &vs->flock->start, &vs->flock->length, |
3190 | 82cc3ee8 | M. Mohan Kumar | &vs->flock->proc_id, &vs->flock->client_id); |
3191 | 82cc3ee8 | M. Mohan Kumar | |
3192 | 82cc3ee8 | M. Mohan Kumar | vs->status = P9_LOCK_ERROR; |
3193 | 82cc3ee8 | M. Mohan Kumar | |
3194 | 82cc3ee8 | M. Mohan Kumar | /* We support only block flag now (that too ignored currently) */
|
3195 | 82cc3ee8 | M. Mohan Kumar | if (vs->flock->flags & ~P9_LOCK_FLAGS_BLOCK) {
|
3196 | 82cc3ee8 | M. Mohan Kumar | err = -EINVAL; |
3197 | 82cc3ee8 | M. Mohan Kumar | goto out;
|
3198 | 82cc3ee8 | M. Mohan Kumar | } |
3199 | 82cc3ee8 | M. Mohan Kumar | vs->fidp = lookup_fid(s, fid); |
3200 | 82cc3ee8 | M. Mohan Kumar | if (vs->fidp == NULL) { |
3201 | 82cc3ee8 | M. Mohan Kumar | err = -ENOENT; |
3202 | 82cc3ee8 | M. Mohan Kumar | goto out;
|
3203 | 82cc3ee8 | M. Mohan Kumar | } |
3204 | 82cc3ee8 | M. Mohan Kumar | |
3205 | 82cc3ee8 | M. Mohan Kumar | err = v9fs_do_fstat(s, vs->fidp->fs.fd, &vs->stbuf); |
3206 | 82cc3ee8 | M. Mohan Kumar | if (err < 0) { |
3207 | 82cc3ee8 | M. Mohan Kumar | err = -errno; |
3208 | 82cc3ee8 | M. Mohan Kumar | goto out;
|
3209 | 82cc3ee8 | M. Mohan Kumar | } |
3210 | 82cc3ee8 | M. Mohan Kumar | vs->status = P9_LOCK_SUCCESS; |
3211 | 82cc3ee8 | M. Mohan Kumar | out:
|
3212 | 82cc3ee8 | M. Mohan Kumar | vs->offset += pdu_marshal(vs->pdu, vs->offset, "b", vs->status);
|
3213 | 82cc3ee8 | M. Mohan Kumar | complete_pdu(s, vs->pdu, err); |
3214 | 82cc3ee8 | M. Mohan Kumar | qemu_free(vs->flock); |
3215 | 82cc3ee8 | M. Mohan Kumar | qemu_free(vs); |
3216 | 82cc3ee8 | M. Mohan Kumar | } |
3217 | 82cc3ee8 | M. Mohan Kumar | |
3218 | 8f354003 | M. Mohan Kumar | /*
|
3219 | 8f354003 | M. Mohan Kumar | * When a TGETLOCK request comes, always return success because all lock
|
3220 | 8f354003 | M. Mohan Kumar | * handling is done by client's VFS layer.
|
3221 | 8f354003 | M. Mohan Kumar | */
|
3222 | 8f354003 | M. Mohan Kumar | |
3223 | 8f354003 | M. Mohan Kumar | static void v9fs_getlock(V9fsState *s, V9fsPDU *pdu) |
3224 | 8f354003 | M. Mohan Kumar | { |
3225 | 8f354003 | M. Mohan Kumar | int32_t fid, err = 0;
|
3226 | 8f354003 | M. Mohan Kumar | V9fsGetlockState *vs; |
3227 | 8f354003 | M. Mohan Kumar | |
3228 | 8f354003 | M. Mohan Kumar | vs = qemu_mallocz(sizeof(*vs));
|
3229 | 8f354003 | M. Mohan Kumar | vs->pdu = pdu; |
3230 | 8f354003 | M. Mohan Kumar | vs->offset = 7;
|
3231 | 8f354003 | M. Mohan Kumar | |
3232 | 8f354003 | M. Mohan Kumar | vs->glock = qemu_malloc(sizeof(*vs->glock));
|
3233 | 8f354003 | M. Mohan Kumar | pdu_unmarshal(vs->pdu, vs->offset, "dbqqds", &fid, &vs->glock->type,
|
3234 | 8f354003 | M. Mohan Kumar | &vs->glock->start, &vs->glock->length, &vs->glock->proc_id, |
3235 | 8f354003 | M. Mohan Kumar | &vs->glock->client_id); |
3236 | 8f354003 | M. Mohan Kumar | |
3237 | 8f354003 | M. Mohan Kumar | vs->fidp = lookup_fid(s, fid); |
3238 | 8f354003 | M. Mohan Kumar | if (vs->fidp == NULL) { |
3239 | 8f354003 | M. Mohan Kumar | err = -ENOENT; |
3240 | 8f354003 | M. Mohan Kumar | goto out;
|
3241 | 8f354003 | M. Mohan Kumar | } |
3242 | 8f354003 | M. Mohan Kumar | |
3243 | 8f354003 | M. Mohan Kumar | err = v9fs_do_fstat(s, vs->fidp->fs.fd, &vs->stbuf); |
3244 | 8f354003 | M. Mohan Kumar | if (err < 0) { |
3245 | 8f354003 | M. Mohan Kumar | err = -errno; |
3246 | 8f354003 | M. Mohan Kumar | goto out;
|
3247 | 8f354003 | M. Mohan Kumar | } |
3248 | 8f354003 | M. Mohan Kumar | vs->glock->type = F_UNLCK; |
3249 | 8f354003 | M. Mohan Kumar | vs->offset += pdu_marshal(vs->pdu, vs->offset, "bqqds", vs->glock->type,
|
3250 | 8f354003 | M. Mohan Kumar | vs->glock->start, vs->glock->length, vs->glock->proc_id, |
3251 | 8f354003 | M. Mohan Kumar | &vs->glock->client_id); |
3252 | 8f354003 | M. Mohan Kumar | out:
|
3253 | 8f354003 | M. Mohan Kumar | complete_pdu(s, vs->pdu, err); |
3254 | 8f354003 | M. Mohan Kumar | qemu_free(vs->glock); |
3255 | 8f354003 | M. Mohan Kumar | qemu_free(vs); |
3256 | 8f354003 | M. Mohan Kumar | } |
3257 | 8f354003 | M. Mohan Kumar | |
3258 | b67592ea | M. Mohan Kumar | static void v9fs_mkdir_post_lstat(V9fsState *s, V9fsMkState *vs, int err) |
3259 | b67592ea | M. Mohan Kumar | { |
3260 | b67592ea | M. Mohan Kumar | if (err == -1) { |
3261 | b67592ea | M. Mohan Kumar | err = -errno; |
3262 | b67592ea | M. Mohan Kumar | goto out;
|
3263 | b67592ea | M. Mohan Kumar | } |
3264 | b67592ea | M. Mohan Kumar | |
3265 | b67592ea | M. Mohan Kumar | stat_to_qid(&vs->stbuf, &vs->qid); |
3266 | b67592ea | M. Mohan Kumar | vs->offset += pdu_marshal(vs->pdu, vs->offset, "Q", &vs->qid);
|
3267 | b67592ea | M. Mohan Kumar | err = vs->offset; |
3268 | b67592ea | M. Mohan Kumar | out:
|
3269 | b67592ea | M. Mohan Kumar | complete_pdu(s, vs->pdu, err); |
3270 | b67592ea | M. Mohan Kumar | v9fs_string_free(&vs->fullname); |
3271 | b67592ea | M. Mohan Kumar | v9fs_string_free(&vs->name); |
3272 | b67592ea | M. Mohan Kumar | qemu_free(vs); |
3273 | b67592ea | M. Mohan Kumar | } |
3274 | b67592ea | M. Mohan Kumar | |
3275 | b67592ea | M. Mohan Kumar | static void v9fs_mkdir_post_mkdir(V9fsState *s, V9fsMkState *vs, int err) |
3276 | b67592ea | M. Mohan Kumar | { |
3277 | b67592ea | M. Mohan Kumar | if (err == -1) { |
3278 | b67592ea | M. Mohan Kumar | err = -errno; |
3279 | b67592ea | M. Mohan Kumar | goto out;
|
3280 | b67592ea | M. Mohan Kumar | } |
3281 | b67592ea | M. Mohan Kumar | |
3282 | b67592ea | M. Mohan Kumar | err = v9fs_do_lstat(s, &vs->fullname, &vs->stbuf); |
3283 | b67592ea | M. Mohan Kumar | v9fs_mkdir_post_lstat(s, vs, err); |
3284 | b67592ea | M. Mohan Kumar | return;
|
3285 | b67592ea | M. Mohan Kumar | out:
|
3286 | b67592ea | M. Mohan Kumar | complete_pdu(s, vs->pdu, err); |
3287 | b67592ea | M. Mohan Kumar | v9fs_string_free(&vs->fullname); |
3288 | b67592ea | M. Mohan Kumar | v9fs_string_free(&vs->name); |
3289 | b67592ea | M. Mohan Kumar | qemu_free(vs); |
3290 | b67592ea | M. Mohan Kumar | } |
3291 | b67592ea | M. Mohan Kumar | |
3292 | b67592ea | M. Mohan Kumar | static void v9fs_mkdir(V9fsState *s, V9fsPDU *pdu) |
3293 | b67592ea | M. Mohan Kumar | { |
3294 | b67592ea | M. Mohan Kumar | int32_t fid; |
3295 | b67592ea | M. Mohan Kumar | V9fsMkState *vs; |
3296 | b67592ea | M. Mohan Kumar | int err = 0; |
3297 | b67592ea | M. Mohan Kumar | V9fsFidState *fidp; |
3298 | b67592ea | M. Mohan Kumar | gid_t gid; |
3299 | b67592ea | M. Mohan Kumar | int mode;
|
3300 | b67592ea | M. Mohan Kumar | |
3301 | b67592ea | M. Mohan Kumar | vs = qemu_malloc(sizeof(*vs));
|
3302 | b67592ea | M. Mohan Kumar | vs->pdu = pdu; |
3303 | b67592ea | M. Mohan Kumar | vs->offset = 7;
|
3304 | b67592ea | M. Mohan Kumar | |
3305 | b67592ea | M. Mohan Kumar | v9fs_string_init(&vs->fullname); |
3306 | b67592ea | M. Mohan Kumar | pdu_unmarshal(vs->pdu, vs->offset, "dsdd", &fid, &vs->name, &mode,
|
3307 | b67592ea | M. Mohan Kumar | &gid); |
3308 | b67592ea | M. Mohan Kumar | |
3309 | b67592ea | M. Mohan Kumar | fidp = lookup_fid(s, fid); |
3310 | b67592ea | M. Mohan Kumar | if (fidp == NULL) { |
3311 | b67592ea | M. Mohan Kumar | err = -ENOENT; |
3312 | b67592ea | M. Mohan Kumar | goto out;
|
3313 | b67592ea | M. Mohan Kumar | } |
3314 | b67592ea | M. Mohan Kumar | |
3315 | b67592ea | M. Mohan Kumar | v9fs_string_sprintf(&vs->fullname, "%s/%s", fidp->path.data, vs->name.data);
|
3316 | b67592ea | M. Mohan Kumar | err = v9fs_do_mkdir(s, vs->fullname.data, mode, fidp->uid, gid); |
3317 | b67592ea | M. Mohan Kumar | v9fs_mkdir_post_mkdir(s, vs, err); |
3318 | b67592ea | M. Mohan Kumar | return;
|
3319 | b67592ea | M. Mohan Kumar | |
3320 | b67592ea | M. Mohan Kumar | out:
|
3321 | b67592ea | M. Mohan Kumar | complete_pdu(s, vs->pdu, err); |
3322 | b67592ea | M. Mohan Kumar | v9fs_string_free(&vs->fullname); |
3323 | b67592ea | M. Mohan Kumar | v9fs_string_free(&vs->name); |
3324 | b67592ea | M. Mohan Kumar | qemu_free(vs); |
3325 | b67592ea | M. Mohan Kumar | } |
3326 | b67592ea | M. Mohan Kumar | |
3327 | fa32ef88 | Aneesh Kumar K.V | static void v9fs_post_xattr_getvalue(V9fsState *s, V9fsXattrState *vs, int err) |
3328 | fa32ef88 | Aneesh Kumar K.V | { |
3329 | fa32ef88 | Aneesh Kumar K.V | |
3330 | fa32ef88 | Aneesh Kumar K.V | if (err < 0) { |
3331 | fa32ef88 | Aneesh Kumar K.V | err = -errno; |
3332 | fa32ef88 | Aneesh Kumar K.V | free_fid(s, vs->xattr_fidp->fid); |
3333 | fa32ef88 | Aneesh Kumar K.V | goto out;
|
3334 | fa32ef88 | Aneesh Kumar K.V | } |
3335 | fa32ef88 | Aneesh Kumar K.V | vs->offset += pdu_marshal(vs->pdu, vs->offset, "q", vs->size);
|
3336 | fa32ef88 | Aneesh Kumar K.V | err = vs->offset; |
3337 | fa32ef88 | Aneesh Kumar K.V | out:
|
3338 | fa32ef88 | Aneesh Kumar K.V | complete_pdu(s, vs->pdu, err); |
3339 | fa32ef88 | Aneesh Kumar K.V | v9fs_string_free(&vs->name); |
3340 | fa32ef88 | Aneesh Kumar K.V | qemu_free(vs); |
3341 | fa32ef88 | Aneesh Kumar K.V | return;
|
3342 | fa32ef88 | Aneesh Kumar K.V | } |
3343 | fa32ef88 | Aneesh Kumar K.V | |
3344 | fa32ef88 | Aneesh Kumar K.V | static void v9fs_post_xattr_check(V9fsState *s, V9fsXattrState *vs, ssize_t err) |
3345 | fa32ef88 | Aneesh Kumar K.V | { |
3346 | fa32ef88 | Aneesh Kumar K.V | if (err < 0) { |
3347 | fa32ef88 | Aneesh Kumar K.V | err = -errno; |
3348 | fa32ef88 | Aneesh Kumar K.V | free_fid(s, vs->xattr_fidp->fid); |
3349 | fa32ef88 | Aneesh Kumar K.V | goto out;
|
3350 | fa32ef88 | Aneesh Kumar K.V | } |
3351 | fa32ef88 | Aneesh Kumar K.V | /*
|
3352 | fa32ef88 | Aneesh Kumar K.V | * Read the xattr value
|
3353 | fa32ef88 | Aneesh Kumar K.V | */
|
3354 | fa32ef88 | Aneesh Kumar K.V | vs->xattr_fidp->fs.xattr.len = vs->size; |
3355 | fa32ef88 | Aneesh Kumar K.V | vs->xattr_fidp->fid_type = P9_FID_XATTR; |
3356 | fa32ef88 | Aneesh Kumar K.V | vs->xattr_fidp->fs.xattr.copied_len = -1;
|
3357 | fa32ef88 | Aneesh Kumar K.V | if (vs->size) {
|
3358 | fa32ef88 | Aneesh Kumar K.V | vs->xattr_fidp->fs.xattr.value = qemu_malloc(vs->size); |
3359 | fa32ef88 | Aneesh Kumar K.V | err = v9fs_do_lgetxattr(s, &vs->xattr_fidp->path, |
3360 | fa32ef88 | Aneesh Kumar K.V | &vs->name, vs->xattr_fidp->fs.xattr.value, |
3361 | fa32ef88 | Aneesh Kumar K.V | vs->xattr_fidp->fs.xattr.len); |
3362 | fa32ef88 | Aneesh Kumar K.V | } |
3363 | fa32ef88 | Aneesh Kumar K.V | v9fs_post_xattr_getvalue(s, vs, err); |
3364 | fa32ef88 | Aneesh Kumar K.V | return;
|
3365 | fa32ef88 | Aneesh Kumar K.V | out:
|
3366 | fa32ef88 | Aneesh Kumar K.V | complete_pdu(s, vs->pdu, err); |
3367 | fa32ef88 | Aneesh Kumar K.V | v9fs_string_free(&vs->name); |
3368 | fa32ef88 | Aneesh Kumar K.V | qemu_free(vs); |
3369 | fa32ef88 | Aneesh Kumar K.V | } |
3370 | fa32ef88 | Aneesh Kumar K.V | |
3371 | fa32ef88 | Aneesh Kumar K.V | static void v9fs_post_lxattr_getvalue(V9fsState *s, |
3372 | fa32ef88 | Aneesh Kumar K.V | V9fsXattrState *vs, int err)
|
3373 | fa32ef88 | Aneesh Kumar K.V | { |
3374 | fa32ef88 | Aneesh Kumar K.V | if (err < 0) { |
3375 | fa32ef88 | Aneesh Kumar K.V | err = -errno; |
3376 | fa32ef88 | Aneesh Kumar K.V | free_fid(s, vs->xattr_fidp->fid); |
3377 | fa32ef88 | Aneesh Kumar K.V | goto out;
|
3378 | fa32ef88 | Aneesh Kumar K.V | } |
3379 | fa32ef88 | Aneesh Kumar K.V | vs->offset += pdu_marshal(vs->pdu, vs->offset, "q", vs->size);
|
3380 | fa32ef88 | Aneesh Kumar K.V | err = vs->offset; |
3381 | fa32ef88 | Aneesh Kumar K.V | out:
|
3382 | fa32ef88 | Aneesh Kumar K.V | complete_pdu(s, vs->pdu, err); |
3383 | fa32ef88 | Aneesh Kumar K.V | v9fs_string_free(&vs->name); |
3384 | fa32ef88 | Aneesh Kumar K.V | qemu_free(vs); |
3385 | fa32ef88 | Aneesh Kumar K.V | return;
|
3386 | fa32ef88 | Aneesh Kumar K.V | } |
3387 | fa32ef88 | Aneesh Kumar K.V | |
3388 | fa32ef88 | Aneesh Kumar K.V | static void v9fs_post_lxattr_check(V9fsState *s, |
3389 | fa32ef88 | Aneesh Kumar K.V | V9fsXattrState *vs, ssize_t err) |
3390 | fa32ef88 | Aneesh Kumar K.V | { |
3391 | fa32ef88 | Aneesh Kumar K.V | if (err < 0) { |
3392 | fa32ef88 | Aneesh Kumar K.V | err = -errno; |
3393 | fa32ef88 | Aneesh Kumar K.V | free_fid(s, vs->xattr_fidp->fid); |
3394 | fa32ef88 | Aneesh Kumar K.V | goto out;
|
3395 | fa32ef88 | Aneesh Kumar K.V | } |
3396 | fa32ef88 | Aneesh Kumar K.V | /*
|
3397 | fa32ef88 | Aneesh Kumar K.V | * Read the xattr value
|
3398 | fa32ef88 | Aneesh Kumar K.V | */
|
3399 | fa32ef88 | Aneesh Kumar K.V | vs->xattr_fidp->fs.xattr.len = vs->size; |
3400 | fa32ef88 | Aneesh Kumar K.V | vs->xattr_fidp->fid_type = P9_FID_XATTR; |
3401 | fa32ef88 | Aneesh Kumar K.V | vs->xattr_fidp->fs.xattr.copied_len = -1;
|
3402 | fa32ef88 | Aneesh Kumar K.V | if (vs->size) {
|
3403 | fa32ef88 | Aneesh Kumar K.V | vs->xattr_fidp->fs.xattr.value = qemu_malloc(vs->size); |
3404 | fa32ef88 | Aneesh Kumar K.V | err = v9fs_do_llistxattr(s, &vs->xattr_fidp->path, |
3405 | fa32ef88 | Aneesh Kumar K.V | vs->xattr_fidp->fs.xattr.value, |
3406 | fa32ef88 | Aneesh Kumar K.V | vs->xattr_fidp->fs.xattr.len); |
3407 | fa32ef88 | Aneesh Kumar K.V | } |
3408 | fa32ef88 | Aneesh Kumar K.V | v9fs_post_lxattr_getvalue(s, vs, err); |
3409 | fa32ef88 | Aneesh Kumar K.V | return;
|
3410 | fa32ef88 | Aneesh Kumar K.V | out:
|
3411 | fa32ef88 | Aneesh Kumar K.V | complete_pdu(s, vs->pdu, err); |
3412 | fa32ef88 | Aneesh Kumar K.V | v9fs_string_free(&vs->name); |
3413 | fa32ef88 | Aneesh Kumar K.V | qemu_free(vs); |
3414 | fa32ef88 | Aneesh Kumar K.V | } |
3415 | fa32ef88 | Aneesh Kumar K.V | |
3416 | fa32ef88 | Aneesh Kumar K.V | static void v9fs_xattrwalk(V9fsState *s, V9fsPDU *pdu) |
3417 | fa32ef88 | Aneesh Kumar K.V | { |
3418 | fa32ef88 | Aneesh Kumar K.V | ssize_t err = 0;
|
3419 | fa32ef88 | Aneesh Kumar K.V | V9fsXattrState *vs; |
3420 | fa32ef88 | Aneesh Kumar K.V | int32_t fid, newfid; |
3421 | fa32ef88 | Aneesh Kumar K.V | |
3422 | fa32ef88 | Aneesh Kumar K.V | vs = qemu_malloc(sizeof(*vs));
|
3423 | fa32ef88 | Aneesh Kumar K.V | vs->pdu = pdu; |
3424 | fa32ef88 | Aneesh Kumar K.V | vs->offset = 7;
|
3425 | fa32ef88 | Aneesh Kumar K.V | |
3426 | fa32ef88 | Aneesh Kumar K.V | pdu_unmarshal(vs->pdu, vs->offset, "dds", &fid, &newfid, &vs->name);
|
3427 | fa32ef88 | Aneesh Kumar K.V | vs->file_fidp = lookup_fid(s, fid); |
3428 | fa32ef88 | Aneesh Kumar K.V | if (vs->file_fidp == NULL) { |
3429 | fa32ef88 | Aneesh Kumar K.V | err = -ENOENT; |
3430 | fa32ef88 | Aneesh Kumar K.V | goto out;
|
3431 | fa32ef88 | Aneesh Kumar K.V | } |
3432 | fa32ef88 | Aneesh Kumar K.V | |
3433 | fa32ef88 | Aneesh Kumar K.V | vs->xattr_fidp = alloc_fid(s, newfid); |
3434 | fa32ef88 | Aneesh Kumar K.V | if (vs->xattr_fidp == NULL) { |
3435 | fa32ef88 | Aneesh Kumar K.V | err = -EINVAL; |
3436 | fa32ef88 | Aneesh Kumar K.V | goto out;
|
3437 | fa32ef88 | Aneesh Kumar K.V | } |
3438 | fa32ef88 | Aneesh Kumar K.V | |
3439 | fa32ef88 | Aneesh Kumar K.V | v9fs_string_copy(&vs->xattr_fidp->path, &vs->file_fidp->path); |
3440 | fa32ef88 | Aneesh Kumar K.V | if (vs->name.data[0] == 0) { |
3441 | fa32ef88 | Aneesh Kumar K.V | /*
|
3442 | fa32ef88 | Aneesh Kumar K.V | * listxattr request. Get the size first
|
3443 | fa32ef88 | Aneesh Kumar K.V | */
|
3444 | fa32ef88 | Aneesh Kumar K.V | vs->size = v9fs_do_llistxattr(s, &vs->xattr_fidp->path, |
3445 | fa32ef88 | Aneesh Kumar K.V | NULL, 0); |
3446 | fa32ef88 | Aneesh Kumar K.V | if (vs->size < 0) { |
3447 | fa32ef88 | Aneesh Kumar K.V | err = vs->size; |
3448 | fa32ef88 | Aneesh Kumar K.V | } |
3449 | fa32ef88 | Aneesh Kumar K.V | v9fs_post_lxattr_check(s, vs, err); |
3450 | fa32ef88 | Aneesh Kumar K.V | return;
|
3451 | fa32ef88 | Aneesh Kumar K.V | } else {
|
3452 | fa32ef88 | Aneesh Kumar K.V | /*
|
3453 | fa32ef88 | Aneesh Kumar K.V | * specific xattr fid. We check for xattr
|
3454 | fa32ef88 | Aneesh Kumar K.V | * presence also collect the xattr size
|
3455 | fa32ef88 | Aneesh Kumar K.V | */
|
3456 | fa32ef88 | Aneesh Kumar K.V | vs->size = v9fs_do_lgetxattr(s, &vs->xattr_fidp->path, |
3457 | fa32ef88 | Aneesh Kumar K.V | &vs->name, NULL, 0); |
3458 | fa32ef88 | Aneesh Kumar K.V | if (vs->size < 0) { |
3459 | fa32ef88 | Aneesh Kumar K.V | err = vs->size; |
3460 | fa32ef88 | Aneesh Kumar K.V | } |
3461 | fa32ef88 | Aneesh Kumar K.V | v9fs_post_xattr_check(s, vs, err); |
3462 | fa32ef88 | Aneesh Kumar K.V | return;
|
3463 | fa32ef88 | Aneesh Kumar K.V | } |
3464 | fa32ef88 | Aneesh Kumar K.V | out:
|
3465 | fa32ef88 | Aneesh Kumar K.V | complete_pdu(s, vs->pdu, err); |
3466 | fa32ef88 | Aneesh Kumar K.V | v9fs_string_free(&vs->name); |
3467 | fa32ef88 | Aneesh Kumar K.V | qemu_free(vs); |
3468 | fa32ef88 | Aneesh Kumar K.V | } |
3469 | fa32ef88 | Aneesh Kumar K.V | |
3470 | 10b468bd | Aneesh Kumar K.V | static void v9fs_xattrcreate(V9fsState *s, V9fsPDU *pdu) |
3471 | 10b468bd | Aneesh Kumar K.V | { |
3472 | 10b468bd | Aneesh Kumar K.V | int flags;
|
3473 | 10b468bd | Aneesh Kumar K.V | int32_t fid; |
3474 | 10b468bd | Aneesh Kumar K.V | ssize_t err = 0;
|
3475 | 10b468bd | Aneesh Kumar K.V | V9fsXattrState *vs; |
3476 | 10b468bd | Aneesh Kumar K.V | |
3477 | 10b468bd | Aneesh Kumar K.V | vs = qemu_malloc(sizeof(*vs));
|
3478 | 10b468bd | Aneesh Kumar K.V | vs->pdu = pdu; |
3479 | 10b468bd | Aneesh Kumar K.V | vs->offset = 7;
|
3480 | 10b468bd | Aneesh Kumar K.V | |
3481 | 10b468bd | Aneesh Kumar K.V | pdu_unmarshal(vs->pdu, vs->offset, "dsqd",
|
3482 | 10b468bd | Aneesh Kumar K.V | &fid, &vs->name, &vs->size, &flags); |
3483 | 10b468bd | Aneesh Kumar K.V | |
3484 | 10b468bd | Aneesh Kumar K.V | vs->file_fidp = lookup_fid(s, fid); |
3485 | 10b468bd | Aneesh Kumar K.V | if (vs->file_fidp == NULL) { |
3486 | 10b468bd | Aneesh Kumar K.V | err = -EINVAL; |
3487 | 10b468bd | Aneesh Kumar K.V | goto out;
|
3488 | 10b468bd | Aneesh Kumar K.V | } |
3489 | 10b468bd | Aneesh Kumar K.V | |
3490 | 10b468bd | Aneesh Kumar K.V | /* Make the file fid point to xattr */
|
3491 | 10b468bd | Aneesh Kumar K.V | vs->xattr_fidp = vs->file_fidp; |
3492 | 10b468bd | Aneesh Kumar K.V | vs->xattr_fidp->fid_type = P9_FID_XATTR; |
3493 | 10b468bd | Aneesh Kumar K.V | vs->xattr_fidp->fs.xattr.copied_len = 0;
|
3494 | 10b468bd | Aneesh Kumar K.V | vs->xattr_fidp->fs.xattr.len = vs->size; |
3495 | 10b468bd | Aneesh Kumar K.V | vs->xattr_fidp->fs.xattr.flags = flags; |
3496 | 10b468bd | Aneesh Kumar K.V | v9fs_string_init(&vs->xattr_fidp->fs.xattr.name); |
3497 | 10b468bd | Aneesh Kumar K.V | v9fs_string_copy(&vs->xattr_fidp->fs.xattr.name, &vs->name); |
3498 | 9ed3ef26 | Aneesh Kumar K.V | if (vs->size)
|
3499 | 9ed3ef26 | Aneesh Kumar K.V | vs->xattr_fidp->fs.xattr.value = qemu_malloc(vs->size); |
3500 | 9ed3ef26 | Aneesh Kumar K.V | else
|
3501 | 9ed3ef26 | Aneesh Kumar K.V | vs->xattr_fidp->fs.xattr.value = NULL;
|
3502 | 10b468bd | Aneesh Kumar K.V | |
3503 | 10b468bd | Aneesh Kumar K.V | out:
|
3504 | 10b468bd | Aneesh Kumar K.V | complete_pdu(s, vs->pdu, err); |
3505 | 10b468bd | Aneesh Kumar K.V | v9fs_string_free(&vs->name); |
3506 | 10b468bd | Aneesh Kumar K.V | qemu_free(vs); |
3507 | 10b468bd | Aneesh Kumar K.V | } |
3508 | fa32ef88 | Aneesh Kumar K.V | |
3509 | df0973a4 | M. Mohan Kumar | static void v9fs_readlink_post_readlink(V9fsState *s, V9fsReadLinkState *vs, |
3510 | df0973a4 | M. Mohan Kumar | int err)
|
3511 | df0973a4 | M. Mohan Kumar | { |
3512 | df0973a4 | M. Mohan Kumar | if (err < 0) { |
3513 | df0973a4 | M. Mohan Kumar | err = -errno; |
3514 | df0973a4 | M. Mohan Kumar | goto out;
|
3515 | df0973a4 | M. Mohan Kumar | } |
3516 | df0973a4 | M. Mohan Kumar | vs->offset += pdu_marshal(vs->pdu, vs->offset, "s", &vs->target);
|
3517 | df0973a4 | M. Mohan Kumar | err = vs->offset; |
3518 | df0973a4 | M. Mohan Kumar | out:
|
3519 | df0973a4 | M. Mohan Kumar | complete_pdu(s, vs->pdu, err); |
3520 | df0973a4 | M. Mohan Kumar | v9fs_string_free(&vs->target); |
3521 | df0973a4 | M. Mohan Kumar | qemu_free(vs); |
3522 | df0973a4 | M. Mohan Kumar | } |
3523 | df0973a4 | M. Mohan Kumar | |
3524 | df0973a4 | M. Mohan Kumar | static void v9fs_readlink(V9fsState *s, V9fsPDU *pdu) |
3525 | df0973a4 | M. Mohan Kumar | { |
3526 | df0973a4 | M. Mohan Kumar | int32_t fid; |
3527 | df0973a4 | M. Mohan Kumar | V9fsReadLinkState *vs; |
3528 | df0973a4 | M. Mohan Kumar | int err = 0; |
3529 | df0973a4 | M. Mohan Kumar | V9fsFidState *fidp; |
3530 | df0973a4 | M. Mohan Kumar | |
3531 | df0973a4 | M. Mohan Kumar | vs = qemu_malloc(sizeof(*vs));
|
3532 | df0973a4 | M. Mohan Kumar | vs->pdu = pdu; |
3533 | df0973a4 | M. Mohan Kumar | vs->offset = 7;
|
3534 | df0973a4 | M. Mohan Kumar | |
3535 | df0973a4 | M. Mohan Kumar | pdu_unmarshal(vs->pdu, vs->offset, "d", &fid);
|
3536 | df0973a4 | M. Mohan Kumar | |
3537 | df0973a4 | M. Mohan Kumar | fidp = lookup_fid(s, fid); |
3538 | df0973a4 | M. Mohan Kumar | if (fidp == NULL) { |
3539 | df0973a4 | M. Mohan Kumar | err = -ENOENT; |
3540 | df0973a4 | M. Mohan Kumar | goto out;
|
3541 | df0973a4 | M. Mohan Kumar | } |
3542 | df0973a4 | M. Mohan Kumar | |
3543 | df0973a4 | M. Mohan Kumar | v9fs_string_init(&vs->target); |
3544 | df0973a4 | M. Mohan Kumar | err = v9fs_do_readlink(s, &fidp->path, &vs->target); |
3545 | df0973a4 | M. Mohan Kumar | v9fs_readlink_post_readlink(s, vs, err); |
3546 | df0973a4 | M. Mohan Kumar | return;
|
3547 | df0973a4 | M. Mohan Kumar | out:
|
3548 | df0973a4 | M. Mohan Kumar | complete_pdu(s, vs->pdu, err); |
3549 | df0973a4 | M. Mohan Kumar | qemu_free(vs); |
3550 | df0973a4 | M. Mohan Kumar | } |
3551 | df0973a4 | M. Mohan Kumar | |
3552 | 9f107513 | Anthony Liguori | typedef void (pdu_handler_t)(V9fsState *s, V9fsPDU *pdu); |
3553 | 9f107513 | Anthony Liguori | |
3554 | 9f107513 | Anthony Liguori | static pdu_handler_t *pdu_handlers[] = {
|
3555 | c18e2f94 | Sripathi Kodi | [P9_TREADDIR] = v9fs_readdir, |
3556 | be940c87 | M. Mohan Kumar | [P9_TSTATFS] = v9fs_statfs, |
3557 | 00ede4c2 | Sripathi Kodi | [P9_TGETATTR] = v9fs_getattr, |
3558 | c79ce737 | Sripathi Kodi | [P9_TSETATTR] = v9fs_setattr, |
3559 | fa32ef88 | Aneesh Kumar K.V | [P9_TXATTRWALK] = v9fs_xattrwalk, |
3560 | 10b468bd | Aneesh Kumar K.V | [P9_TXATTRCREATE] = v9fs_xattrcreate, |
3561 | 5268cecc | M. Mohan Kumar | [P9_TMKNOD] = v9fs_mknod, |
3562 | c7b4b0b3 | M. Mohan Kumar | [P9_TRENAME] = v9fs_rename, |
3563 | 82cc3ee8 | M. Mohan Kumar | [P9_TLOCK] = v9fs_lock, |
3564 | 8f354003 | M. Mohan Kumar | [P9_TGETLOCK] = v9fs_getlock, |
3565 | df0973a4 | M. Mohan Kumar | [P9_TREADLINK] = v9fs_readlink, |
3566 | b67592ea | M. Mohan Kumar | [P9_TMKDIR] = v9fs_mkdir, |
3567 | 9f107513 | Anthony Liguori | [P9_TVERSION] = v9fs_version, |
3568 | 771e9d4c | M. Mohan Kumar | [P9_TLOPEN] = v9fs_open, |
3569 | 9f107513 | Anthony Liguori | [P9_TATTACH] = v9fs_attach, |
3570 | 9f107513 | Anthony Liguori | [P9_TSTAT] = v9fs_stat, |
3571 | 9f107513 | Anthony Liguori | [P9_TWALK] = v9fs_walk, |
3572 | 9f107513 | Anthony Liguori | [P9_TCLUNK] = v9fs_clunk, |
3573 | b41e95d3 | Venkateswararao Jujjuri (JV) | [P9_TFSYNC] = v9fs_fsync, |
3574 | 9f107513 | Anthony Liguori | [P9_TOPEN] = v9fs_open, |
3575 | 9f107513 | Anthony Liguori | [P9_TREAD] = v9fs_read, |
3576 | 9f107513 | Anthony Liguori | #if 0
|
3577 | 9f107513 | Anthony Liguori | [P9_TAUTH] = v9fs_auth,
|
3578 | 9f107513 | Anthony Liguori | #endif
|
3579 | 9f107513 | Anthony Liguori | [P9_TFLUSH] = v9fs_flush, |
3580 | b2c224be | Venkateswararao Jujjuri (JV) | [P9_TLINK] = v9fs_link, |
3581 | 08c60fc9 | Venkateswararao Jujjuri (JV) | [P9_TSYMLINK] = v9fs_symlink, |
3582 | 9f107513 | Anthony Liguori | [P9_TCREATE] = v9fs_create, |
3583 | c1568af5 | Venkateswararao Jujjuri (JV) | [P9_TLCREATE] = v9fs_lcreate, |
3584 | 9f107513 | Anthony Liguori | [P9_TWRITE] = v9fs_write, |
3585 | 9f107513 | Anthony Liguori | [P9_TWSTAT] = v9fs_wstat, |
3586 | 9f107513 | Anthony Liguori | [P9_TREMOVE] = v9fs_remove, |
3587 | 9f107513 | Anthony Liguori | }; |
3588 | 9f107513 | Anthony Liguori | |
3589 | 9f107513 | Anthony Liguori | static void submit_pdu(V9fsState *s, V9fsPDU *pdu) |
3590 | 9f107513 | Anthony Liguori | { |
3591 | 9f107513 | Anthony Liguori | pdu_handler_t *handler; |
3592 | 9f107513 | Anthony Liguori | |
3593 | 9f107513 | Anthony Liguori | if (debug_9p_pdu) {
|
3594 | 9f107513 | Anthony Liguori | pprint_pdu(pdu); |
3595 | 9f107513 | Anthony Liguori | } |
3596 | 9f107513 | Anthony Liguori | |
3597 | 9f107513 | Anthony Liguori | BUG_ON(pdu->id >= ARRAY_SIZE(pdu_handlers)); |
3598 | 9f107513 | Anthony Liguori | |
3599 | 9f107513 | Anthony Liguori | handler = pdu_handlers[pdu->id]; |
3600 | 9f107513 | Anthony Liguori | BUG_ON(handler == NULL);
|
3601 | 9f107513 | Anthony Liguori | |
3602 | 9f107513 | Anthony Liguori | handler(s, pdu); |
3603 | 9f107513 | Anthony Liguori | } |
3604 | 9f107513 | Anthony Liguori | |
3605 | 9f107513 | Anthony Liguori | static void handle_9p_output(VirtIODevice *vdev, VirtQueue *vq) |
3606 | 9f107513 | Anthony Liguori | { |
3607 | 9f107513 | Anthony Liguori | V9fsState *s = (V9fsState *)vdev; |
3608 | 9f107513 | Anthony Liguori | V9fsPDU *pdu; |
3609 | 9f107513 | Anthony Liguori | ssize_t len; |
3610 | 9f107513 | Anthony Liguori | |
3611 | 9f107513 | Anthony Liguori | while ((pdu = alloc_pdu(s)) &&
|
3612 | 9f107513 | Anthony Liguori | (len = virtqueue_pop(vq, &pdu->elem)) != 0) {
|
3613 | 9f107513 | Anthony Liguori | uint8_t *ptr; |
3614 | 9f107513 | Anthony Liguori | |
3615 | 9f107513 | Anthony Liguori | BUG_ON(pdu->elem.out_num == 0 || pdu->elem.in_num == 0); |
3616 | 9f107513 | Anthony Liguori | BUG_ON(pdu->elem.out_sg[0].iov_len < 7); |
3617 | 9f107513 | Anthony Liguori | |
3618 | 9f107513 | Anthony Liguori | ptr = pdu->elem.out_sg[0].iov_base;
|
3619 | 9f107513 | Anthony Liguori | |
3620 | 9f107513 | Anthony Liguori | memcpy(&pdu->size, ptr, 4);
|
3621 | 9f107513 | Anthony Liguori | pdu->id = ptr[4];
|
3622 | 9f107513 | Anthony Liguori | memcpy(&pdu->tag, ptr + 5, 2); |
3623 | 9f107513 | Anthony Liguori | |
3624 | 9f107513 | Anthony Liguori | submit_pdu(s, pdu); |
3625 | 9f107513 | Anthony Liguori | } |
3626 | 9f107513 | Anthony Liguori | |
3627 | 9f107513 | Anthony Liguori | free_pdu(s, pdu); |
3628 | 9f107513 | Anthony Liguori | } |
3629 | 9f107513 | Anthony Liguori | |
3630 | 9f107513 | Anthony Liguori | static uint32_t virtio_9p_get_features(VirtIODevice *vdev, uint32_t features)
|
3631 | 9f107513 | Anthony Liguori | { |
3632 | 9f107513 | Anthony Liguori | features |= 1 << VIRTIO_9P_MOUNT_TAG;
|
3633 | 9f107513 | Anthony Liguori | return features;
|
3634 | 9f107513 | Anthony Liguori | } |
3635 | 9f107513 | Anthony Liguori | |
3636 | 9f107513 | Anthony Liguori | static V9fsState *to_virtio_9p(VirtIODevice *vdev)
|
3637 | 9f107513 | Anthony Liguori | { |
3638 | 9f107513 | Anthony Liguori | return (V9fsState *)vdev;
|
3639 | 9f107513 | Anthony Liguori | } |
3640 | 9f107513 | Anthony Liguori | |
3641 | 9f107513 | Anthony Liguori | static void virtio_9p_get_config(VirtIODevice *vdev, uint8_t *config) |
3642 | 9f107513 | Anthony Liguori | { |
3643 | 9f107513 | Anthony Liguori | struct virtio_9p_config *cfg;
|
3644 | 9f107513 | Anthony Liguori | V9fsState *s = to_virtio_9p(vdev); |
3645 | 9f107513 | Anthony Liguori | |
3646 | 9f107513 | Anthony Liguori | cfg = qemu_mallocz(sizeof(struct virtio_9p_config) + |
3647 | 9f107513 | Anthony Liguori | s->tag_len); |
3648 | 9f107513 | Anthony Liguori | stw_raw(&cfg->tag_len, s->tag_len); |
3649 | 9f107513 | Anthony Liguori | memcpy(cfg->tag, s->tag, s->tag_len); |
3650 | 9f107513 | Anthony Liguori | memcpy(config, cfg, s->config_size); |
3651 | 9f107513 | Anthony Liguori | qemu_free(cfg); |
3652 | 9f107513 | Anthony Liguori | } |
3653 | 9f107513 | Anthony Liguori | |
3654 | 9f107513 | Anthony Liguori | VirtIODevice *virtio_9p_init(DeviceState *dev, V9fsConf *conf) |
3655 | 9f107513 | Anthony Liguori | { |
3656 | 9f107513 | Anthony Liguori | V9fsState *s; |
3657 | 9f107513 | Anthony Liguori | int i, len;
|
3658 | 9f107513 | Anthony Liguori | struct stat stat;
|
3659 | 9f107513 | Anthony Liguori | FsTypeEntry *fse; |
3660 | 9f107513 | Anthony Liguori | |
3661 | 9f107513 | Anthony Liguori | |
3662 | 9f107513 | Anthony Liguori | s = (V9fsState *)virtio_common_init("virtio-9p",
|
3663 | 9f107513 | Anthony Liguori | VIRTIO_ID_9P, |
3664 | 9f107513 | Anthony Liguori | sizeof(struct virtio_9p_config)+ |
3665 | 9f107513 | Anthony Liguori | MAX_TAG_LEN, |
3666 | 9f107513 | Anthony Liguori | sizeof(V9fsState));
|
3667 | 9f107513 | Anthony Liguori | |
3668 | 9f107513 | Anthony Liguori | /* initialize pdu allocator */
|
3669 | 9f107513 | Anthony Liguori | QLIST_INIT(&s->free_list); |
3670 | 9f107513 | Anthony Liguori | for (i = 0; i < (MAX_REQ - 1); i++) { |
3671 | 9f107513 | Anthony Liguori | QLIST_INSERT_HEAD(&s->free_list, &s->pdus[i], next); |
3672 | 9f107513 | Anthony Liguori | } |
3673 | 9f107513 | Anthony Liguori | |
3674 | 9f107513 | Anthony Liguori | s->vq = virtio_add_queue(&s->vdev, MAX_REQ, handle_9p_output); |
3675 | 9f107513 | Anthony Liguori | |
3676 | 9f107513 | Anthony Liguori | fse = get_fsdev_fsentry(conf->fsdev_id); |
3677 | 9f107513 | Anthony Liguori | |
3678 | 9f107513 | Anthony Liguori | if (!fse) {
|
3679 | 9f107513 | Anthony Liguori | /* We don't have a fsdev identified by fsdev_id */
|
3680 | 9f506893 | Harsh Prateek Bora | fprintf(stderr, "Virtio-9p device couldn't find fsdev with the "
|
3681 | 9f506893 | Harsh Prateek Bora | "id = %s\n", conf->fsdev_id ? conf->fsdev_id : "NULL"); |
3682 | 9f107513 | Anthony Liguori | exit(1);
|
3683 | 9f107513 | Anthony Liguori | } |
3684 | 9f107513 | Anthony Liguori | |
3685 | 9f107513 | Anthony Liguori | if (!fse->path || !conf->tag) {
|
3686 | 9f107513 | Anthony Liguori | /* we haven't specified a mount_tag or the path */
|
3687 | 9f107513 | Anthony Liguori | fprintf(stderr, "fsdev with id %s needs path "
|
3688 | 9f107513 | Anthony Liguori | "and Virtio-9p device needs mount_tag arguments\n",
|
3689 | 9f107513 | Anthony Liguori | conf->fsdev_id); |
3690 | 9f107513 | Anthony Liguori | exit(1);
|
3691 | 9f107513 | Anthony Liguori | } |
3692 | 9f107513 | Anthony Liguori | |
3693 | 758e8e38 | Venkateswararao Jujjuri (JV) | if (!strcmp(fse->security_model, "passthrough")) { |
3694 | 758e8e38 | Venkateswararao Jujjuri (JV) | /* Files on the Fileserver set to client user credentials */
|
3695 | 758e8e38 | Venkateswararao Jujjuri (JV) | s->ctx.fs_sm = SM_PASSTHROUGH; |
3696 | fc22118d | Aneesh Kumar K.V | s->ctx.xops = passthrough_xattr_ops; |
3697 | 758e8e38 | Venkateswararao Jujjuri (JV) | } else if (!strcmp(fse->security_model, "mapped")) { |
3698 | 758e8e38 | Venkateswararao Jujjuri (JV) | /* Files on the fileserver are set to QEMU credentials.
|
3699 | 758e8e38 | Venkateswararao Jujjuri (JV) | * Client user credentials are saved in extended attributes.
|
3700 | 758e8e38 | Venkateswararao Jujjuri (JV) | */
|
3701 | 758e8e38 | Venkateswararao Jujjuri (JV) | s->ctx.fs_sm = SM_MAPPED; |
3702 | fc22118d | Aneesh Kumar K.V | s->ctx.xops = mapped_xattr_ops; |
3703 | 12848bfc | Aneesh Kumar K.V | } else if (!strcmp(fse->security_model, "none")) { |
3704 | 12848bfc | Aneesh Kumar K.V | /*
|
3705 | 12848bfc | Aneesh Kumar K.V | * Files on the fileserver are set to QEMU credentials.
|
3706 | 12848bfc | Aneesh Kumar K.V | */
|
3707 | 12848bfc | Aneesh Kumar K.V | s->ctx.fs_sm = SM_NONE; |
3708 | fc22118d | Aneesh Kumar K.V | s->ctx.xops = none_xattr_ops; |
3709 | 758e8e38 | Venkateswararao Jujjuri (JV) | } else {
|
3710 | 12848bfc | Aneesh Kumar K.V | fprintf(stderr, "Default to security_model=none. You may want"
|
3711 | 12848bfc | Aneesh Kumar K.V | " enable advanced security model using "
|
3712 | 9ce56db6 | Venkateswararao Jujjuri (JV) | "security option:\n\t security_model=passthrough \n\t "
|
3713 | 9ce56db6 | Venkateswararao Jujjuri (JV) | "security_model=mapped\n");
|
3714 | 12848bfc | Aneesh Kumar K.V | s->ctx.fs_sm = SM_NONE; |
3715 | fc22118d | Aneesh Kumar K.V | s->ctx.xops = none_xattr_ops; |
3716 | 9ce56db6 | Venkateswararao Jujjuri (JV) | } |
3717 | 9ce56db6 | Venkateswararao Jujjuri (JV) | |
3718 | 9f107513 | Anthony Liguori | if (lstat(fse->path, &stat)) {
|
3719 | 9f107513 | Anthony Liguori | fprintf(stderr, "share path %s does not exist\n", fse->path);
|
3720 | 9f107513 | Anthony Liguori | exit(1);
|
3721 | 9f107513 | Anthony Liguori | } else if (!S_ISDIR(stat.st_mode)) { |
3722 | 9f107513 | Anthony Liguori | fprintf(stderr, "share path %s is not a directory \n", fse->path);
|
3723 | 9f107513 | Anthony Liguori | exit(1);
|
3724 | 9f107513 | Anthony Liguori | } |
3725 | 9f107513 | Anthony Liguori | |
3726 | 9f107513 | Anthony Liguori | s->ctx.fs_root = qemu_strdup(fse->path); |
3727 | 9f107513 | Anthony Liguori | len = strlen(conf->tag); |
3728 | 9f107513 | Anthony Liguori | if (len > MAX_TAG_LEN) {
|
3729 | 9f107513 | Anthony Liguori | len = MAX_TAG_LEN; |
3730 | 9f107513 | Anthony Liguori | } |
3731 | 9f107513 | Anthony Liguori | /* s->tag is non-NULL terminated string */
|
3732 | 9f107513 | Anthony Liguori | s->tag = qemu_malloc(len); |
3733 | 9f107513 | Anthony Liguori | memcpy(s->tag, conf->tag, len); |
3734 | 9f107513 | Anthony Liguori | s->tag_len = len; |
3735 | 9f107513 | Anthony Liguori | s->ctx.uid = -1;
|
3736 | 9f107513 | Anthony Liguori | |
3737 | 9f107513 | Anthony Liguori | s->ops = fse->ops; |
3738 | 9f107513 | Anthony Liguori | s->vdev.get_features = virtio_9p_get_features; |
3739 | 9f107513 | Anthony Liguori | s->config_size = sizeof(struct virtio_9p_config) + |
3740 | 9f107513 | Anthony Liguori | s->tag_len; |
3741 | 9f107513 | Anthony Liguori | s->vdev.get_config = virtio_9p_get_config; |
3742 | 9f107513 | Anthony Liguori | |
3743 | 9f107513 | Anthony Liguori | return &s->vdev;
|
3744 | 9f107513 | Anthony Liguori | } |